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ARVO 2014 Annual Meeting Abstracts 110 Vitreomacular Interface and Management Sunday, May 04, 2014 8:30 AM–10:15 AM Exhibit/Poster Hall SA Poster Session Program #/Board # Range: 287–329/B0265–B0307 Organizing Section: Retina Contributing Section(s): Physiology/Pharmacology, Visual Psychophysics / Physiological Optics Program Number: 287 Poster Board Number: B0265 Presentation Time: 8:30 AM–10:15 AM Drawbridge elevation versus tangential separation of the inner retina as the mechanism of full thickness macular hole formation Wai H. Woon1, Denis Greig2, Mike D. Savage3, Mark C. Wilson4, Colin A. Grant5, Fiona Bishop1, Bataung Mokete1, Chek T. Ngo6, Liam A. Sullivan1. 1Dept Ophthalmology, St James’ Hospital, Leeds, United Kingdom; 2Dept Physics, University of Leeds, Leeds, United Kingdom; 3Dept Applied Mathematics, University of Leeds, Leeds, United Kingdom; 4Dept Engineering, University of Leeds, Leeds, United Kingdom; 5Dept Medical Engineering, University of Bradford, Bradford, United Kingdom; 6Dept Ophthalmology, University of Sarawak, Sarawak, Malaysia. Purpose: This study is to test one aspect of a novel bistable hypothesis of macular hole formation and closure. The inner retina at the normal fovea has the shape of an inverted shallow dome with a central hole. The bistable hypothesis postulates that this is a bistable structure which can be triggered to flip inside out and back again like an umbrella. Flipping the inner retina inside out causes a macular hole due to the oblique path of the Muller cells through the retina. An antero-posterior (A-P) movement of the inner retina would then cause an A-P and tangential movement of the outer retina. In cross section, this movement of the inner retina is seen as a drawbridge elevation of the inner retina and this causes the outer retina to curl up and away from the central fovea (Fig. 1). In this hypothesis the size of the macular hole would be related to the degree to which the annulus of inner retina has been flipped through and there is no requirement for tangential separation of the inner retina. Methods: This is a retrospective study of developing full thickness macular holes that were observed to change morphology prior to surgery. For each eye, the following was determined from aligned OCT scans: dA – average of the change in angle of elevation of the inner retina on either side of the hole (defined using tangents to the inner retina at a distance of 700 microns from the axis of the hole) dI – change in separation of the inner retina (minimum hole diameter at the level of the inner retina) dD – change in the base diameter of the macular hole Results: 17 eyes were identified. One eye progressed through a sequence of 2 changes in morphology allowing 18 measurements to be made. In 2 eyes, enlargement of the macular hole with further elevation of the inner retina was observed despite complete separation of the parafoveal vitreoretinal attachments at presentation. Correlation coefficient between dA and dD: 0.63 (p = 0.005) Correlation coefficient between dI and dD: -0.08 (p = 0.75) Scatter plots are shown in Fig. 2 Conclusions: This study suggests that the mechanism of macular hole formation involves the elevation of the inner retina in a drawbridge manner. These findings are consistent with the bistable hypothesis of macular hole formation Schematic of oblique Muller fibres connecting inner and outer retina. In reality the fibres have a Z-configuration. ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts 2013). The purpose of this study was to determine the long term changes of the parafoveal retinal thickness after MH surgery for up to 4 years Methods: Twenty-seven eyes of 26 patients (13 women and 13 men) with a MH who underwent PPV at the Matsumoto Dental University Hospital were studied. The eyes were examined at 1, 3, 6, 12 months (n=27), and 2 (n=16), 3 (n=10), and 4 (n=5) years after the surgery. The mean retinal thickness was measured in the images obtained by volume scan mode of the Spectralis HRA+OCT (Heidelberg Engineering, Germany). The average retinal thickness of the 4 parafoveal sectors was measured by the built-in software. The thickness of each retinal layer at 1,000 μm from the fovea as the representative thickness of each of the 4 parafoveal sectors was measured in the horizontal and vertical images manually. Results: The mean parafoveal retinal thickness of the nasal, superior, inferior, and temporal sectors were 361.9±15.3, 341.2±15.4, 339.9±13.7, 313.3±13.6 mm, respectively at 12 months after the surgery. All but the nasal sectors at 3, 6 and 12 months were significantly decreased compared to that at 1 month after the surgery. There was also a significant decrease in only the temporal sector at 12 months compared to that at 6 months. In contrast, the minimum decrease was observed at the nasal sector. There was no significant decrease thereafter in all sectors. A similar tendency of significant decreases of the thicknesses was observed in the inner nuclear layer (INL) and outer nuclear layer (ONL) but not in other retinal layers Conclusions: The postoperative parafoveal retinal thickness decreased significantly up to 1 year in all but the nasal sectors after MH surgery with ILM peeling. The reduction of the thickness of INL and ONL seemed to be associated with this change. Commercial Relationships: Kouichi Ohta, None; Atsuko Sato, None; Emi Fukui, None Scatter plots Commercial Relationships: Wai H. Woon, None; Denis Greig, None; Mike D. Savage, None; Mark C. Wilson, None; Colin A. Grant, None; Fiona Bishop, None; Bataung Mokete, None; Chek T. Ngo, None; Liam A. Sullivan, None Program Number: 288 Poster Board Number: B0266 Presentation Time: 8:30 AM–10:15 AM Residual parafoveal nasal retinal thickening after macular hole surgery with internal limiting membrane peeling Kouichi Ohta, Atsuko Sato, Emi Fukui. Ophthalmology, Matsumoto Dental University, Shiojiri, Japan. Purpose: We have reported that the parafoveal contour is thicker at the nasal sector and thinner at the temporal sector in the optical coherence tomographic (OCT) images recorded 6 months after successful idiopathic macular hole (MH) closure by pars plana vitrectomy (PPV) with internal limiting membrane (ILM) peeling (Ohta K. Br J Ophthalmol 2010, Graefes Arch Clin Exp Ophthalmol Program Number: 289 Poster Board Number: B0267 Presentation Time: 8:30 AM–10:15 AM Macular choriovitreal membrane and macular traction syndrome: comparison with clinical, fluorescein angiographic and optical coherence tomographic findings June-Gone Kim1, 2, Yoon Jeon Kim1, 2, Dong Yoon Kim1, 2. 1 Ophthalmology, Univ of Ulsan College, Seoul, Republic of Korea; 2 Ophthalmology, ASAN medical center, SEOUL, Republic of Korea. Purpose: Macular choriovitreal membrane (MCVM) is an epiretinal fibrovascular membrane adherent to the posterior vitreous hyaloid extending from the subfoveal space. We intended to evaluate preoperative and postoperative clinical features, fluorescein angiographic and optical coherence tomographic findings of MCVM by comparing with those of macular traction syndrome (MTS). Methods: Consecutive nine MCVM patients and 103 MTS patients underwent successful vitrectomy by one surgeon due to symptomatic macular traction were identified through a retrospective chart review. All clinical data were reviewed for underlying ocular and systemic conditions, visual acuity, optical coherence tomography (OCT), and fluorescein angiography (FA) findings. Results: MCVM patients were younger than MTS patients (55.1 years vs. 63.6 years, p=0.040) and showed worse visual acuity (LogMAR 1.27 vs. 0.66, p=0.001). When compared with MTS patients, MCVM patients showed higher association with previous laser history (44.4% vs. 18.4%, p=0.025), ocular comorbidities (100.0% vs. 41.8%, p=0.001), and diabetes (66.7% vs. 19.4%, p=0.030). While subfoveal fibrous stalk and photoreceptor disruption were noted in all of OCT data in patients with MCVM, only 2 patients (1.9%) with MTS showed photoreceptor disruption. In FA, 7 cases of MCVM (71.3%) demonstrated definite hyperfluorescence. Both MCVM and MTS patients showed significant decrease ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts in central retinal thickness postoperatively owing to successful removal of macular traction (p=0.001). Although MTS patients showed marked visual improvement postoperatively (p=0.001), MCVM patients did not (p=0.355). Rather, MCVM patients showed improvement of central vision subjectively. Conclusions: MCVM is the rarely reported disorder caused by the various pathologic vitreoretinal conditions. It is important to distinguish MCVM from MTS with thorough preoperative examination, because of their different surgical approach and postoperative prognosis. Fluorescein angiographic(FA) findings of macular choriovitreal membrane. Commercial Relationships: June-Gone Kim, None; Yoon Jeon Kim, None; Dong Yoon Kim, None Optical coherence tomographic (OCT) findings of macular choriovitreal membrane and macular traction syndrome(MTS). Program Number: 290 Poster Board Number: B0268 Presentation Time: 8:30 AM–10:15 AM Influence of vitreomacular interface on anti-VEGF therapy using treat and extend treatment protocol for age-related macular degeneration Samuel K. Houston1, 2, Nadim Rayess1, 2, Allen C. Ho1, 2, Carl D. Regillo1, 2. 1Mid-Atlantic Retina, Philadelphia, PA; 2Wills Eye Hospital, Philadelphia, PA. Purpose: The purpose of this study is to determine the influence of the vitreomacular interface (VMI) on treatment outcomes in patients with neovascular age-related macular degeneration (AMD) who are treated with anti-VEGF agents using a treat and extend protocol. Methods: This study is a retrospective, observational, case series of patients diagnosed with neovascular AMD who were treated at Mid Atlantic Retina (MAR), the Retina Service of The Wills Eye Institute, Philadelphia, PA from January 1, 2009 to December 1, 2013. Following IRB approval, patient records were reviewed for age, gender, visual comorbidities, visual acuity (baseline, year 1), anti-VEGF treatment history, OCT central retinal thickness (CRT), and OCT evaluation of vitreomacular interface. Results: A total of 64 (43 female, 21 male) treatment-naïve patients with neovascular AMD were reviewed, with a mean age of 80.4 years. 49 patients (77%) did not have evidence of vitreomacular adhesion or traction (non-VMA), while 15 patients (23%) did have evidence of VMA or VMT. Baseline mean VA in the non-VMA group was 20/98 with a mean CRT of 312 microns. Mean VA at year 1 in the non-VMA group was 20/66 with a mean CRT of 264 microns. Baseline mean VA in the VMA/VMT group was 20/162 with a mean CRT of 348 microns. Mean VA at year 1 in the VMA/VMT group was 20/67 with a mean CRT of 308 microns. Mean total number of injections at year 1 for the non-VMA group was 7.57 versus 8.7 (P = 0.028) for the VMA/VMT group. The mean interval between injections in the non-VMA group was 7.5 weeks versus 6.27 weeks ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts (P = 0.022). The mean longest interval between injections in the nonVMA group was 11.4 weeks compared to 9.1 weeks (P = 0.017) in the VMA/VMT group. Conclusions: The vitreomacular interface (VMI) appears to have a significant influence on anti-VEGF treatment intervals and should be assessed when using a treat-and-extend protocol. VMA/VMT on OCT may require more intensive treatment with decreased ability to extend treatment intervals. Commercial Relationships: Samuel K. Houston, Genentech (F), Regeneron (F); Nadim Rayess, Genentech (F), Regeneron (F); Allen C. Ho, Genentech (F), Regeneron (F); Carl D. Regillo, Genentech (F), Regeneron (F) Program Number: 291 Poster Board Number: B0269 Presentation Time: 8:30 AM–10:15 AM Ocriplasmin for Vitreomacular Adhesion (VMA) in the Clinical Setting: Rates of VMA Release, Development of Macular Holes, and Visual Outcomes Andrew Coskey, David M. Brown, Claudia Hooten, Leslie K. Kao, Charles C. Wykoff, James C. Major, Amy C. Schefler. Research, Retina Consultants of Houston, Houston, TX. Purpose: To evaluate the rate of resolution of symptomatic vitreomacular adhesion (VMA) after a single intravitreal injection of ocriplasmin. Methods: This was a retrospective review of all patients treated with ocriplasimin in a nine-month period immediately after the FDA approval of the drug (Jan 2013-Sep 2013) at a large, multi-site retina practice. Clinical data collected and assessed included anatomic success, pre- and post-injection visual acuity, need for vitrectomy, and adverse visual effects. Results: Fifty-two patients underwent treatment. At baseline, all patients had VMA, two patients (3.8%) had mild epiretinal membranes and 22 patients (42.3%) had evolving or small macular holes. Twenty-four patients (46.2%) demonstrated resolution of VMA by OCT. Mean initial LogMAR scores of patients whose hyaloid released was 0.469 with a gain of 0.335 post treatment. Eighteen patients (34.6%) had no anatomic change. Thirteen patients (25%) had worsening of anatomy and/or vision that required vitrectomy including five patients (9.6%) who developed a full thickness macular hole. There was an 18.2% closure rate in the group of patients that presented with macular holes. This group had initial and final LogMAR scores of 0.872 and 0.662, respectively. Three patients whose vision worsened reported an overall decrease/darkening of their vision, one of whom had a confirmed severe decrease in the combined response on a full field ERG. Overall, patients’ vision improved from a LogMAR score of 0.629 pre-treatment to a score of 0.531 post-treatment. Conclusions: This is the largest series examining the use of ocriplasmin in a clinical setting since the MIVI-TRUST trial. Despite the fact that some patients did not meet the strict criteria for entry into MIVI-TRUST, we still observed a 46% rate of anatomic resolution of VMA. One quarter of patients still require vitrectomy and severe ERG changes can occur. Commercial Relationships: Andrew Coskey, None; David M. Brown, None; Claudia Hooten, None; Leslie K. Kao, None; Charles C. Wykoff, None; James C. Major, None; Amy C. Schefler, None Program Number: 292 Poster Board Number: B0270 Presentation Time: 8:30 AM–10:15 AM Full Thickness Macular Hole secondary to High Power, Handheld, Blue Laser: Natural History and Management Outcomes Nicola G. Ghazi1, 2, Sulaiman Alsulaiman1. 1Vitreo/Retinal (KKESH), King Khaled Eye Specialist Hosp, Riyadh, Saudi Arabia; 2 Ophthalmology, University of Virginia, Charlottesville, VA. Purpose: To report the natural history and management outcomes of macular hole caused by momentary exposure to a high-power, handheld, blue laser devise Methods: This is a consecutive case series of 15 eyes of 15 patients who presented with macular hole caused by exposure to a blue laser device (450 nm and a power range from 150 mW to 1200 mW) to a single institution. Evaluation included a full ophthalmic examination, fundus photography, macular spectral-domain optical coherence tomography and fundus fluorescein angiography. The main outcome measures included the visual and anatomical outcomes Results: All patients were young males. There were 11 eyes with full-thickness macular hole (FTMH) and 4 eyes with stage 1 holes compromising 2 with outer retinal disruption in the fovea and 2 with foveal schisis-like cavity. Best corrected Snellen visual acuity at presentation ranged from 20/30 to 20/400 (mean 20/165). All eyes were observed for at least 3 months prior to any intervention. Six eyes with FTMH underwent pars plana vitrectomy, internal limiting membrane peeling along with gas or silicone oil tamponade. Five of the six operated eyes had complete closure of the macular hole with marked visual recovery. One eye had a persistently open hole following surgery attributed to lack of positioning. The remaining five eyes with FTMH did not undergo surgery for various reasons and none of them closed spontaneously. The 4 eyes with outer retinal disruption and foveal schisis-like changes healed spontaneously with complete visual and anatomical recovery. The final mean BCVA for all eyes was 20/53 (range: 20/30 to 20/125). Conclusions: FTMH can result from momentary exposure to highpower handheld laser devices, which can permanently reduce central vision. While spontaneous closure may be anticipated in some cases, most cases require surgical intervention. Vitrectomy is successful in closing the macular hole along with visual acuity improvement in most of the cases. Commercial Relationships: Nicola G. Ghazi, None; Sulaiman Alsulaiman, None Program Number: 293 Poster Board Number: B0271 Presentation Time: 8:30 AM–10:15 AM Clinical and Anatomic Outcomes of Patients Undergoing Surgery for Vitreofoveal Traction Christine Bokman1, Marco A. Gonzalez2, Harry W. Flynn2, William Smiddy2. 1University of Miami Miller School of Medicine, Miami, FL; 2Bascom Palmer Eye Institute, Miami, FL. Purpose: To evaluate the clinical characteristics and optical coherence tomography (OCT) outcomes for patients with vitreofoveal traction (VFT) undergoing pars plana vitrectomy (PPV). Methods: This is a non-comparative interventional consecutive case series from January 2007 through November 2013. Patients undergoing PPV for symptomatic VFT were identified. Patients with concomitant macular holes were excluded from this series. Clinical characteristics and OCT features were compared preoperatively and postoperatively. Results: A total of 68 eyes in 68 patients underwent PPV. The mean age at time of surgery was 60.5 years (range of 46 to 77). Preoperatively, visual acuity ranged from 20/25 to 20/400 and improved at least 1 line or more in 44% of eyes. Postoperatively, a ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts macular hole developed in 4 eyes (5.9%). The appearance of traction on OCT resolved in all eyes. Central subfoveal thickness improved from 405.4 microns to 286.6 microns post-operatively. Preoperative optical coherence tomography features did not correlate with visual acuity. Conclusions: Patients with vitreofoveal traction usually achieve favorable visual and OCT outcomes after PPV. Commercial Relationships: Christine Bokman, None; Marco A. Gonzalez, None; Harry W. Flynn, None; William Smiddy, None Program Number: 294 Poster Board Number: B0272 Presentation Time: 8:30 AM–10:15 AM Resolution of Vitreomacular Traction Using Jetrea and its Potential Role in Diabetic Macular Edema Bradley ONeill1, Amar Shah2, Joseph M. Coney3. 1St. Elizabeth Health Center, Youngstown, OH; 2Northeast Ohio Medical University, Rootstown, OH; 3Retina Associates of Cleveland, Beachwood, OH. Purpose: To evaluate the safety and efficacy of intravitreal injection of Jetrea in patients diagnosed with symptomatic vitreomacular traction (VMT) and its potential role in treatment of diabetic macular edema (DME). Methods: An 8-month retrospective chart analysis was conducted on 24 patients with symptomatic VMT who received intravitreal injection of Jetrea 125μg using standard sterile pars plana injection technique. Each patient underwent OCT imaging before treatment. Visual acuity was measured and dilated fundus exam was performed 1 week and 1 month after injection. The primary endpoint was resolution of VMT at 1 month. Secondary end points included need for surgical intervention, continued presence of macular hole, decrease in macular hole size, and change in VMT thickness. Results: Overall, 12 of 24 eyes in patients aged 53-94 years old (mean 71.90 years old) treated with Jetrea had complete resolution of VMT within 1 month after injection. Fifty percent of patients showed an improvement of best-corrected visual acuity. Nine eyes had macular holes, pre-injection sizes ranged from 90μm - 326μm (mean 171.78 μm); 7 holes closed after Jetrea injection. Five patients had an epiretinal membrane before injection; of those, only 1 eye resolved with treatment. Of the nine diabetic eyes treated, 4 experienced VMT resolution. Three eyes were noted to have concomitant DME; 1 of which had marked improvement of DME in addition to complete resolution of VMT. Conclusions: Intravitreal injection of Jetrea successfully resolved vitreomacular traction in half of those treated. Use of Jetrea in treatment of concurrent diabetic macular edema may be a potential area of interest for future studies. Figure 1: Results following injection with Jetrea are shown above. Vitreomacular Traction (VMT). Epiretinal Membrane (ERM). Visual Acuity (VA). Figure 2: OCT images of a patient with VMT and DME in the same eye are shown both before (above) and 1 week after (below) injection with Jetrea. Before Jetrea injection, patient’s DME had been unsuccessfully treated with numerous injections of Lucentis. Commercial Relationships: Bradley ONeill, None; Amar Shah, None; Joseph M. Coney, Thrombogenics (C), Thrombogenics (F) ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Program Number: 295 Poster Board Number: B0273 Presentation Time: 8:30 AM–10:15 AM Internal limiting membrane peeling’s influence on rates of cystoid macular edema following cataract surgery Tanuj Banker, James M. Osher, Kristen Midgley, Michael Lai. Georgetown Univ/Retina Grp of Washington, Washington, DC. Purpose: To analyze the outcomes and complications following cataract extraction (CE) in eyes which had previously undergone small gauge (23/25g) pars plana vitrectomy (PPV) with epiretinal membrane (ERM) peeling. Risk factors potentially associated with increased rates of cystoid macular edema (CME) were also identified. Methods: A consecutive interventional case series from 2010 to 2012 (n=81) by one group of retinal surgeons who performed PPV with ERM peeling using small gauge instrumentation in phakic eyes. Exclusion criteria included pre-existing macular disease, postoperative retinal detachment, previous PPV, documented followup of less than three months, combined MP/CE/PCIOL, and eyes that remained phakic during the postoperative period. Postoperative CME was confirmed with Spectral Domain Optical Coherence Tomography (SD-OCT) and fluorescein angiography (FA). Primary outcome measure was the rate of CME after CE. Secondary outcome measures included visual acuity (VA) assessment. Results: Eighty-one eyes with a mean age of 65.16 +/- 11.7 years were followed for a mean time of 579 days. The mean preoperative VA was 20/70 (logMAR 0.52), improving to 20/50 (logMAR 0.44) post-MP prior to CE. (p < 0.05). The mean VA prior to CE/PCIOL placement was 20/200 (logMAR 1.0), improving to 20/50 (logMAR 0.37) post-operatively (p < 0.01). Post CE/PCIOL placement, 22.2% of eyes (n=18) had CME with a mean central macular thickness (CMT) of 426.23 microm ± 79.5 vs. 335.04 microm ± 68.7 for eyes without CME (p<.01). 61.7% (n=50) of MP procedures included intraoperative ILM peeling. Eyes with ILM peeling had a CMT of 356.31 microm ± 91.32 vs. 362.94 microm ± 95.85 for eyes without ILM peeling (p>.81). Conclusions: MP with PPV is an effective treatment for visually significant ERM and results in improved visual acuity. CME develops frequently after CE/PCIOL in eyes that have undergone previous MP. Peeling the ILM does not appear to alter the risk of CME. SD-OCT is an effective tool in monitoring postoperative CME. Eyes undergoing CE/PCIOL placement after MP require careful monitoring with OCT to evaluate for postoperative CME. Commercial Relationships: Tanuj Banker, None; James M. Osher, None; Kristen Midgley, None; Michael Lai, None Program Number: 296 Poster Board Number: B0274 Presentation Time: 8:30 AM–10:15 AM Outer Band Reflectivity Changes on SD-OCT Following Intravitreal Ocriplasmin for Vitreomacular Traction (VMT) and macular holes (MH) Nathan C. Steinle, Carlos Quezada, Ma Nasir, Dante J. Pieramici, Alessandro Castellarin, Robert F. See, Stephen Couvillion, Dilsher Dhoot, Melvin Rabena, Robert L. Avery. California Retina Consultants, Santa Barbara, CA. Purpose: To report initial experience with intravitreal ocriplasmin (IVO) and to describe outer retinal band reflectivity changes observed on spectral domain OCT (SDOCT) following IVO injection in patients with VMT with or without MH. Methods: A consecutive retrospective review of patients with VMT and MH who were treated with IVO was performed. Patients underwent complete ophthalmic evaluation, including nonstandardized Snellen visual acuity testing, and SD-OCT at baseline and follow-up visits. Results: Twenty-four eyes of 24 consecutive patients received IVO for symptomatic VMT. Patients ages ranged from 53 to 93 years with a mean of 73 years. The mean follow-up was 168 days (range 20-291 days), and there were 15 phakic and 9 pseudophakic eyes. VMT release at day 30 after IVO was achieved in 12 out of 24 (50%) patients, at an average of 14 days (1-30 days) after treatment. Eight patients had pre-ocriplasmin MH associated with VMT. Closure of the MH post ocriplasmin was achieved in 2 patients and 6 patients underwent PPV for MH repair. Ten of 24 (42%) patients presented with changes in the outer bands (external limiting membrane and/ or IS/OS lines) on SD-OCT after ocriplasmin injection. In 7 of 10 (70%) of these patients, VMT release was noted on OCT by day 30 post-injection compared to 4 of 12 (33%) patients without outer band changes post-IVO. Normalization of the outer band reflectivity was achieved in all cases by the end of follow-up. Mean visual acuity (VA) improved from 0.50 logMar at baseline to 0.37 logMar at the last-follow-up visit. In patients with decreased outer band reflectivity, mean VA improved from 0.45 logMar to 0.23 logMar at the last follow-up. No complications were observed during the injection procedure. Common referred symptoms post IVO were floaters in 12/24 patients, distortion (6/24) and flashes in 5/24. Dyschromatopsia was reported by 2 patients at day 1 post IVO, symptoms improved within 3 weeks. No retinal tears, detachment or endophthalmitis were found after IVO. Conclusions: In this case series of VMT/MH patients treated with ocriplasmin, changes in the SD-OCT outer retina reflectivity was relatively common. Within weeks the outer retinal reflectivity improved, as did the visual acuity. Further studies to investigate the association between outer band reflectivity changes with the use of IVO and long-term visual acuity are warranted. Commercial Relationships: Nathan C. Steinle, None; Carlos Quezada, None; Ma Nasir, None; Dante J. Pieramici, None; Alessandro Castellarin, None; Robert F. See, None; Stephen Couvillion, None; Dilsher Dhoot, None; Melvin Rabena, None; Robert L. Avery, None Program Number: 297 Poster Board Number: B0275 Presentation Time: 8:30 AM–10:15 AM Photoreceptor outer segment length and outer foveal thickness as predictive factors associated with visual outcome after vitrectomy for vitreomacular traction syndrome Yusuke Ichiyama, Hajime Kawamura, Masato Fujikawa, Osamu Sawada, Yoshitsugu Saishin, Masahito Ohji. ophthalmology, Shiga University of Medical Science, Otsu, Japan. Purpose: To investigate the predictive factors for postoperative BCVA in patients with vitreomacular traction (VMT) syndrome treated with vitrectomy. Methods: Twelve eyes of 12 patients that underwent vitrectomy for VMT syndrome and followed for at least 12 months were retrospectively reviewed. A standard three-port 23 or 25 gauge pars plana vitrectomy with the internal limiting membrane (ILM) peeling was performed. Phacoemulsification and aspiration with intraocular lens implantation was performed simultaneously in phakic eyes. We assessed the associations among postoperative best-corrected visual acuity (BCVA) at 12 months after the surgery and preoperative parameters including BCVA, age, central foveal thickness (CFT : the distance between ILM and retinal pigment epithelium [RPE] at the foveal center), outer foveal thickness (OFT : the distance between external limiting membrane [ELM] and RPE at the foveal center), photoreceptor outer segment length (PROS length : the distance between IS/OS junction and RPE at the foveal center). ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Results: Seven eyes (58%) were phakic and 5 (42%) were pseudophakic preoperatively, with males accounting for 3 cases. The mean patient age at the vitrectomy was 68.6 ± 9.8 years. The mean logarithm of minimum angle of resolution (logMAR) BCVA was 0.42 ± 0.34 at baseline and statistically significantly improved to 0.19 ± 0.24 at 12 months after surgery (P=0.023). Preoperative BCVA, OFT and PROS length were significantly correlated with BCVA at 12 months after the surgery (BCVA: P = 0.032, r = 0.619, OFT: P = 0.001, r = -0.840, PROS: P = 0.002, r = -0.790, respectively). Age, axial length and CFT were not significantly correlated with VA after the surgery (Age: P = 0.331, r = -0.307, axial length: P = 0.091, r = 0.533, CFT: P = 0.545, r = -0.194). Conclusions: Preoperative BCVA, OFT and PROS length could be good predictive factors of postoperative BCVA in patients with VMT syndrome. Commercial Relationships: Yusuke Ichiyama, None; Hajime Kawamura, None; Masato Fujikawa, None; Osamu Sawada, None; Yoshitsugu Saishin, None; Masahito Ohji, None Program Number: 298 Poster Board Number: B0276 Presentation Time: 8:30 AM–10:15 AM Predictors of Success with Intravitreal Ocriplasmin in the Treatment of Symptomatic Vitreomacular Adhesion Daniel B. Roth, Henry L. Feng, Kunjal K. Modi, Howard F. Fine, Harold M. Wheatley. Ophthalmology, Robert Wood Johnson Med School, New Brunswick, NJ. Purpose: Ocriplasmin is a proteolytic enzyme that is approved for the treatment of symptomatic vitreomacular adhesion (VMA). Our study investigates the characteristics of our initial series of eyes treated with intravitreal ocriplasmin in order to determine predictors of success with this pharmacologic agent. Methods: Retrospective review of 62 eyes with symptomatic VMA associated with vision loss and anatomic distortion of the macula. Each eye was treated with a single pars plana injection of ocriplasmin (125mcg in 0.1cc) then assessed at 1 week and 1 month with OCT. Associated conditions included macular hole (MH), cystoid macular edema (CME), myopic schisis, epiretinal membrane (ERM), dry AMD, and diabetic macular edema (DME). Results: Ocriplasmin induced VMA resolution in 41% of all cases. 26% experienced VMA release if other macular disease was also present vs. 59% if no other disease present (p=0.01), and successful in only 20% of eyes with ERM, 12.5% with dry AMD, and 20% with DME. Patients ≤age 75 were 3.2 times more likely to achieve VMA release (p=0.004). 51% released if VMA diameter was <750μm vs. 14% if diameter ≥750μm (p=0.002), and for every additional 100μm there was a 20% increased likelihood of VMA not releasing. VMA release occurred in 23% of pseudophakic eyes vs. 51% in phakic eyes (p=0.02). VMA release occurred in 69% of eyes with MH vs. 16% of non-MH eyes (p<0.001). However, 40% of MH eyes required surgical closure despite VMA release. Nonsurgical MH closure was associated with better pre-injection VA (p=0.014). Mean VMA diameter was smaller in MH eyes that closed pharmacologically (341μm vs. 723μm). Closure was not associated with MH diameter, but most eyes in this cohort had smaller MHs. Factors that did not predict VMA release included photopsia, dyschromatopsia, subjective visual loss, pre-treatment VA, decreased VA at one week, presence of DM, presence of CME, and prior treatments. Conclusions: Ocriplasmin may effectively accomplish vitreomacular separation in eyes that have pathology associated with vitreomacular traction. Features that may predict success include younger age, smaller VMA diameter, phakia, and absence of other macular pathology. In addition, better pre-injection VA and smaller VMA diameter may predict nonsurgical MH closure. Proper case selection is imperative for optimizing success in the pharmacologic management of symptomatic VMA with ocriplasmin. Commercial Relationships: Daniel B. Roth, Bayer (C), Forsight Labs (C), Ohr (C), Regeneron (C), Thrombogenics (C); Henry L. Feng, None; Kunjal K. Modi, None; Howard F. Fine, Allergan (C), Auris Surgical Robotics (C), Genentech (C), Regeneron (C); Harold M. Wheatley, None Support: Thrombogenics Unrestricted Educational Grant Program Number: 299 Poster Board Number: B0277 Presentation Time: 8:30 AM–10:15 AM Jetrea (ocriplasmin) as a treatment option for symptomatic vitreomacular traction with or without macular hole (<400 mm) first clinical experience Mathias M. Maier, Sophia Bonse, Christiane Frank, Nikolaus Feucht, Chris Lohmann. Ophthalmology, Klinikum Rechts der Isar, Augenklinik, TUM, Munich, Germany. Purpose: To evaluate the resolution rate after therapy with intravitreal Jetrea (ocriplasmin) in patients with symptomatic vitreomacular traction (<1500 mm) with or without macular hole (<400 mm) in a clinical setting. Methods: Until now we prospectively examined 14 eyes of 14 patients with symptomatic vitreomacular traction with or without macular hole who underwent intravitreal injection of 0,1ml Jetrea. Visual acuity and SD-OCT ultrastructural parameters were measured before injection. Resolution of the vitreomacular traction, visual acuity and SD-OCT ultrastructural parameters were evaluated again one month after treatment in preliminary 8 of 14 treated eyes as a temporary outcome in the ongoing assessment. Results: Vitreomacular traction resolved in 6 of the 8 injected and yet evaluated eyes. 2 of them showed full-thickness macular hole afterwards. 2 eyes initially presented macular holes which both closed. Best corrected visual acuity was 0.46±0.28 Log MAR at baseline, improving to 0.36±0.21 Log MAR at 1 month after injection. Foveal thickness was 354,87±59,9 mm at baseline, reducing to 294±66,6 mm at 1 month. Conclusions: In the ongoing study, there was yet a large percentage of resolution of vitreomacular traction and closure of macular holes after injection of Jetrea. This was further associated by an improvement of visual acuity and reduction of foveal thickness. Commercial Relationships: Mathias M. Maier, None; Sophia Bonse, None; Christiane Frank, None; Nikolaus Feucht, None; Chris Lohmann, None Program Number: 300 Poster Board Number: B0278 Presentation Time: 8:30 AM–10:15 AM Pneumatic Maculopexy: A Novel Approach for Treatment of Symptomatic Vitreomacular Traction Calvin E. Mein1, 2, Clement K. Chan3, 4. 1Ophthalmology, Retinal Consultants of San Antonio, San Antonio, TX; 2Ophthalmology, University of Texas Health Science Center, San Antonio, TX; 3 Ophthalmology, Southern California Desert Retina Consultants, Palm Desert, CA; 4Ophthalmology, Loma Linda University, Loma Linda, CA. Purpose: To demonstrate the efficacy of intraocular gas injection and limited face-down positioning for treatment of symptomatic vitreomacular traction(VMT) Methods: A retrospective case review was conducted on 9 eyes with vitreomacular traction syndrome treated with intraocular gas injection and limited face down positioning. All eyes were treated with inoffice injection of 0.3 to 0.4ml of C3F8 gas and instructed to position face down part time for at least one or two days. ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Results: Nine cases were reviewed. All eyes had VMT. One eye had a Stage 2 macular hole. Five eyes with vitreomacular traction alone and no macular hole had complete release of the VMT within one month after intraocular gas injection alone. One eye with a Stage 2 macular hole was treated with 0.3 ml of C8F8 and limited face down position. Complete closure of the macular hole was achieved by week four. One eye with broad VMT was treated with ocriplasmin with incomplete release of the VMT. Intraocular gas injection of 0.3ml of C3F8 resulted in release of the central VMT. One eye with VMT initially treated with ocriplasmin developed a full thickness macular hole within 24 hours. Injection of 0.3 ml of C8F8 gas and face down positioning resulted in complete closure of the macular hole within four days. One eye with VMT was initially treated with Ocriplasmin but the VMT did not resolve. An intraocular gas injection was performed. The patient developed a retinal detachment that was successfully repaired with vitrectomy and gas tamponade. Conclusions: Intraocular gas injection alone in the office setting followed by limited face-down positioning appears to be a viable novel alternative for treatment of symptomatic VMT. Commercial Relationships: Calvin E. Mein, Acucela (F), National Eye Institute (F), Quark (F), Regeneron (I), Roche Genentec (R), Thrombogenics (F); Clement K. Chan, Acucela (F), Allergan (R), National Eye Institute (F), Regeneron (F), Roche-Genentec (F), Thrombogenics (R), Valeant (R) Program Number: 301 Poster Board Number: B0279 Presentation Time: 8:30 AM–10:15 AM Ocriplasmin for Vitreomacular Adhesion: Aftermarket Experience and Findings Eric Nudleman, Alan J. Ruby, Jeremy Wolfe. Ophthalmology & Visual Sciences, William Beaumont Hospital, Royal Oak, MI. Purpose: We aimed to identify morphologic criteria to help select appropriate patients for treatment with Ocriplasmin and describe the morphologic changes after VMA release. Methods: This is a retrospective review of patients treated with Ocriplasmin for symptomatic VMA at a single center between February 2013 and September 2013. The primary end point was release of VMA at one month post-injection. Additional endpoints included VMA release by adhesion size, presence of subretinal fluid (SRF) after release of adhesion, size of SRF at 1 week and 1 month, outer retinal structural change, visual acuity, and closure of macular hole. Results: Thirty seven patients met inclusion criteria. Twenty seven eyes had symptomatic VMA and 10 eyes had stage 2-3 macular holes. Sixteen eyes (43%) had complete separation at 1 month. Ten eyes had macular holes at presentation, of which 9 eyes (90%) separated and seven eyes (70%) had closure at 1 month. Epiretinal membrane was present in 2 of 16 eyes (12.5%) that separated, and 10 of 21 eyes (48%) that failed to separate. Average adhesion size was 277 μm (55 μm – 668 μm) in eyes with separation and 657 μm (288 μm - 2994 μm) in eyes that failed. An average vision improvement of -0.19 logMAR was seen in patients that separated, whereas an average vision change of +0.016 logMAR was seen in patients that did not separate. SRF was present following separation in 11 eyes (69%), and persisted through 1 month in 9 eyes (56%). Between 1 week and 1 month follow-up, the average SRF height decreased by 54% and the average SRF basal diameter decreased by 56%. Changes in the IS/OS junction were present in 20 eyes (54%) at 1 week, 15 eyes (40%) at 1 month, and 6 eyes (16%) at last follow-up. The IS/OS changes were equal in eyes that separated and did not separate. Conclusions: Separation of VMA following treatment with Ocriplasmin occurred in 43% of treated eyes. The rate of separation was increased in patients with smaller adhesions without an epiretinal membrane. SRF was present in the majority of patients following separation, but it was reduced by half at 1 month follow-up. Changes in IS/OS junction following treatment were seen in roughly half of patients, but these changes resolved in most patients at final followup. Commercial Relationships: Eric Nudleman, Thrombogenics (F); Alan J. Ruby, Thrombogenics (F); Jeremy Wolfe, Thrombogenics (F) Support: Thrombogenics Grant Support Program Number: 302 Poster Board Number: B0280 Presentation Time: 8:30 AM–10:15 AM Analysis of Anatomic and Visual Acuity Outcomes Following Ocriplasmin Therapy in Symptomatic Vitreomacular Adhesion (VMA) Patients Robert Park. Carolina Ophthalmology PA, Asheville, NC. Purpose: In the combined phase 3 clinical trials to assess safety and efficacy of ocriplasmin intravitreal injection (TG-MV-006 and TGMV-007), 26.5% of ocriplasmin-treated patients achieved the study’s primary end point, which was pharmacologic resolution of VMA. Some post-marketing case series have reported higher efficacy rates, highlighting the importance of proper patient selection. This study tracked overall rates of VMA resolution and associated anatomic and visual acuity outcomes in patients treated with ocriplasmin. Methods: This was a retrospective efficacy and safety study in which patients with OCT-confirmed VMA and associated symptomatology were administered a single intravitreal injection of ocriplasmin. Baseline patient and ocular characteristics were recorded for future post-hoc analysis and included age, sex, lens status, visual acuity (VA), symptoms, presence of epiretinal membrane, size of adhesion, presence and size of macular hole (MH), and central retinal thickness. In patients without baseline MH, we evaluated the rate of VMA resolution up to the last day of follow-up. In patients with baseline MH, VMA resolution and FTMH closure were evaluated. Results: Twenty patients were treated: the rate of VMA resolution in patients without baseline MH was 42% (5/12), and the MH closure rate was 38% (3/8). Average age for patients with VMA resolution was 80.2 years, average greatest linear dimension (GLD) was 145 mm, average duration of symptoms was 4.5 months, and average improvement in VA was 2 lines. For patients without VMA resolution, averages were 77.8 years, GLD was 218 mm, duration of symptoms 3.3 months, and VA improvement was 0.33. For patients with MH at baseline and with hole closure, average age was 71.7 years, average linear dimension of base of hole was 93 mm, average duration of symptoms was 0.92 months, and average improvement in VA was 2.3-lines. Averages for patients without hole closure were 70.1 years, linear dimension of base of hole was 153 mm, symptoms for 2.7 months, and decrease in VA of 0.25. Additional analysis is ongoing and will be presented. Conclusions: Treatment with a single intravitreal injection of ocriplasmin was effective in symptomatic VMA patients with or without FTMH at baseline, and results from this study will help inform physicians and patients on what to expect after treatment with ocriplasmin. Commercial Relationships: Robert Park, ThromboGenics, Inc. (C) ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Program Number: 303 Poster Board Number: B0281 Presentation Time: 8:30 AM–10:15 AM Does macular hole size affect visual outcome? Linda H. Kemp1, Paul Flavahan1, David Yorston1, 2. 1Ophthalmology, Gartnavel General Hospital, Glasgow, United Kingdom; 2 Ophthalmology, Tennent Institute, Glasgow, United Kingdom. Purpose: Studies of prognostic factors in macular hole surgery showed smaller hole size, better pre-operative vision, shorter duration, younger age, and earlier stage macular holes are all associated with better anatomical and visual outcomes. A recent study of 50 eyes found base diameter is the best predictor of anatomical and visual outcome. However, many studies are confounded by different anatomical outcomes. We performed this study to determine if these factors were useful predictors of final vision in eyes that have successful hole closure. Methods: All eyes were examined with the Heidelberg Spectralis OCT. Minimum hole diameter, basal hole diameter and hole height were measured in accordance with published definitions. All patients who were not already pseudophakic had combined cataract surgery and vitrectomy. Following vitrectomy, the ILM was peeled, and the eye filled with C3F8 or C2F6 gas. Patients postured face down overnight following surgery, but no further posturing was required. Visual success was defined as a corrected vision of 6/12 or better. 133 eyes were included. 130 (97.7%) holes were closed with one operation. Only the 130 anatomical successes were included in analysis of visual outcomes. 65 (50%) eyes achieved a vision of 6/12 or better. Results: Patient age, pre-operative visual acuity, minimum hole diameter, basal hole diameter, and hole height were all entered into a logistic regression model. Only pre-operative vision (p<0.0001) and basal diameter (p=0.045) were associated with visual outcome. The pre-op vision and basal diameter were used to rank eyes by probability of visual success, and a receiver operating characteristics curve was plotted. The area under the curve was 0.75, indicating good agreement. Conclusions: Previous studies have shown that anatomical closure is linked to hole diameter. As hole closure is linked to final vision, it can be a confounding factor. Since anatomical success rates of macular hole surgery are approaching 100%, it is useful to identify which factors will predict final visual acuity assuming anatomical closure. We found that pre-operative visual acuity was the most important predictor of final vision, and that hole size was less helpful. This may be explained if hole size is primarily a predictor of hole closure, and of secondary importance in predicting final vision. Receiver operating characteristics curve for vision 6/12 or better. Area under curve=0.75 Commercial Relationships: Linda H. Kemp, None; Paul Flavahan, None; David Yorston, None Program Number: 304 Poster Board Number: B0282 Presentation Time: 8:30 AM–10:15 AM Post-operative restoration of macular microstructure: visual & anatomic outcomes of macular hole surgery at the New York Eye and Ear Infirmary Julia Mathew Padiyedathu, Anna Gabrielian. Ophthalmology, New York Eye and Ear Infirmary, New York, NY. Purpose: The evaluation of anatomic and visual outcomes in macular hole cases treated surgically at the New York Eye and Ear Infirmary from 2006 to 2012. Methods: 33 eyes of 30 patients with the diagnosis of non-traumatic macular hole that underwent pars plana vitrectomy (PPV), membrane peel, gas/silicone oil tamponade, with at least 6 months of followup were included in this retrospective study. Pre- and postoperative macular assessment was conducted with spectral-domain optical coherence tomography (OCT). Sub-group analysis was performed on post-operative microstructural anatomy and its association with postoperative visual outcomes. Results: The mean age was 62.7 years and 25 patients (83%) were female. All patients underwent PPV with internal limiting membrane peel, 31 eyes (96%) had intraocular gas tamponade, and 2 eyes (6%) underwent silicone oil tamponade. Vision improved in 23 eyes (70%), stayed the same in 6 eyes (18%), and became worse in 4 eyes (12%). The mean improvement in BCVA was 0.4 logMAR units. There was successful closure of macular holes in 27 eyes (82%). In 6 eyes (18%) the macular holes remained open. Fifty percent of the holes that remained open were in eyes undergoing reoperation. For the microstructural outcome sub-analysis, 9 of 33 eyes were excluded due to lack of data or lack of MH closure. Of the remaining 24 eyes, 17 eyes (71%) had successful restoration of the IS/OS junction, with a mean post-op BCVA of 0.4 logMAR units (mean improvement in BCVA of 0.3 logMAR units). In 7 eyes (29%), the IS/OS junction was absent, abnormal, or defective, with a mean post-op BCVA of 0.6 logMAR units (mean improvement of BCVA of 0.8 logMAR units). Conclusions: Surgical repair of macular holes leads to an improvement of vision in the majority of cases. Closure of macular holes is achieved after vitrectomy. Prior unsuccessful surgical repair ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts of macular hole is associated with failure to achieve macular hole closure. Successful restoration of microstructural retinal architecture is associated with improved visual acuity. Commercial Relationships: Julia Mathew Padiyedathu, None; Anna Gabrielian, None Program Number: 305 Poster Board Number: B0283 Presentation Time: 8:30 AM–10:15 AM Long-term Clinical Outcomes with Ocriplasmin: The OASIS Study – Baseline Demographics and Ocular Characteristics Michael Tolentino. 1Reseach, CRMD, Winter Haven, FL; 2 Ophthalmology, University of Central Florida, Orlando, FL. Purpose: To present the demographics and baseline ocular characteristics of subjects enrolled in the OASIS study. Methods: The OASIS study is an ongoing study evaluating the long-term efficacy and safety of a single intravitreal injection of ocriplasmin 0.125mg compared to sham treatment in subjects with symptomatic vitreomacular adhesion/vitreomacular traction (VMT) including macular hole with no epiretinal membranes (ERM) at baseline. This Phase 3b, 24-months study is randomized, doublemasked and multicenter with optional cross-over treatment. Selected sites participated in full-field ERG (ffERG) and microperimetry (MP1) sub-studies. Results: Overall two hundred and twenty subjects were enrolled at 25 retina centers in the United States between November 2011 and November 2012: 131 subjects in the main study, 62 in the ffERG sub-study and 27 in the MP-1 sub-study. The mean age of subjects was 69.1 years (SD: 10.29). The majority of the subjects were female (67.3%), White (89.5%) and non-Hispanic (92.7%). Masked data at Baseline showed, the mean BCVA was 63.2 (SD: 9.65) ETDRS letters(20/63 Snellen). Metamorphopsia was present in 171 subjects (77.7%) (95% CI: 72.2; 83.2) on Amsler grid. Macular hole was diagnosed in 76 subjects (34.5%). All 220 subjects had VMA and partial PVD on SD-OCT. Conclusions: The present report describes the baseline demographics and ocular characteristics of subjects enrolled in the OASIS study, which is designed to provide long-term efficacy and safety data in subjects with symptomatic vitreomacular adhesion/VMT including macular hole and excluding ERM. Commercial Relationships: Michael Tolentino, Thrombogenics (C), Thrombogenics (F), Thrombogenics (R) Support: Thrombogenics Research Grant Clinical Trial: NCT01429441 Program Number: 306 Poster Board Number: B0284 Presentation Time: 8:30 AM–10:15 AM Spectral-Domain Optical Coherence Tomography Features and Prediposing to Macular Hole Developement Rodrigo Abreu1, Lorena Sole1, Marta Marmol2, Jeroni Nadal2. 1 Ophthalmology, University Hospital of La Candelaria, Santa Cruz de Tenerife, Spain; 2Ophthalmology, Barraquer Institute, Barcelona, Spain. Purpose: To investigate the clinical and spectral-domain optical coherence tomographic features of patients with macular hole (MH) compared to normal eyes (NE) subjects and the possible optical coherence tomography predisposing factors for the MH developement. Methods: Retrospective electronic health record based study. Clinical and tomographic features of patients with MH and NE patients were collected. All patients underwent complete ophthalmologic examination including best-corrected visual acuity, slit-lamp biomicroscopy, fundus photography, and spectral domain optical coherence tomography. The features of the retina and the vitreomacular interface were graded based on spectral domain optical coherence tomography thickness. In both groups a tomographic study was performed using 512 x 128 Macular Cube protocol Cirrus-HD OCT (Carl Zeiss Meditec, Dublin, CA). Results: A total of 202 eyes from 202 patients (100 NE and 102 MH) were analyzed. There were no statistically significant differences in the mean age of both groups (60.86 ± 14.01 Healthy / 62.29 ± 13.62 AM), or gender distribution . MH stage III (30.4%) and MH stage IV (52.9 %) had a higher representation in the sample (79.4 %). Time of MH diagnosis was over a month in 74.5% of the patients. Mean foveal thickness and inner ring perifoveal thickness were significantly higher in men compared to women (p < 0.05 ) in the NE group, however these differences were not statistically significant in the MH group ( p > 0.05). Volume, average thickness of the cube, nasal sectors and upper inner sector of the OCT study decreased with age, statistically significant only in women ( p < 0.05) in the NE group. Women had lower retinal thickness in all sectors of the outer ring in the OCT in the MH group compared to the NE group. Conclusions: These findings suggest that the retina thinning is being produced with age in healthy women and this retina thinning is maintained in women who develop MH. As women have more thinned retinas, they have lower resistance to vitreomacular traction compared to men who have thicker retinas. These data could stablish a new hypothesis to explain the higher incidence of MH in women compared to men. Commercial Relationships: Rodrigo Abreu, None; Lorena Sole, None; Marta Marmol, None; Jeroni Nadal, None Program Number: 307 Poster Board Number: B0285 Presentation Time: 8:30 AM–10:15 AM Three-Dimensional Enhanced Imaging of the Vitreoretinal Interface in Eyes with Diabetic Retinopathy Using Swept-Source Optical Coherence Tomography Mehreen Adhi1, Jonathan J. Liu2, Martin F. Kraus3, Ireneusz Grulkowski2, Andre J. Witkin1, Caroline R. Baumal1, Joachim Hornegger3, James G. Fujimoto2, Jay S. Duker1, Nadia K. Waheed1. 1 Ophthalmology, New England Eye Center, Tufts University School of Medicine, Boston, MA; 2Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA; 3Pattern Recognition Lab and Graduate School in Advanced Optical Technologies, University of Erlangen-Nuremburg, Erlangen, Germany. Purpose: To demonstrate in-vivo three-dimensional enhanced imaging of the posterior vitreous and the vitreoretinal interface in eyes with diabetic retinopathy using a long-wavelength swept-source optical coherence tomography (SS-OCT) prototype. Methods: Thirteen patients with diabetes (21 eyes) with or without clinical evidence of diabetic retinopathy as determined by a complete ophthalmic examination performed by a retina specialist, were prospectively recruited for imaging on a prototype long-wavelength (1050nm) SS-OCT system with 6mm resolution and 3.6mm imaging range. Up to eight orthogonally scanned three-dimensional SS-OCT volumes consisting of 500x500 axial scans were acquired for each eye over a 12x12mm region (~40 degrees) of the retina. A registration algorithm was applied to remove motion artifacts and merge multiple volumes to improve signal. Visualization of the posterior vitreous and the vitreoretinal interface was enhanced using a high dynamic range (HDR) method. Results: Of the 21 eyes, 15 eyes had clinical features suggestive of diabetic retinopathy, while 6 eyes had no clinical evidence of diabetic retinopathy. Of the 15 eyes that had diabetic retinopathy, 6 eyes had non-proliferative diabetic retinopathy, 5 eyes had proliferative diabetic retinopathy and 4 eyes had diabetic macular edema. ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Enhancement of the posterior vitreous and the vitreoretinal interface using the HDR method showed hyaloid detachment near the optic disk in 19 of 21 eyes (90%) and hyaloid detachment elsewhere in 18 of 21 eyes (86%). Of the 15 eyes with clinical evidence of diabetic retinopathy, the detached hyaloid appeared thickened in 6 of 15 eyes (40%) when compared to eyes without diabetic retinopathy. Vitreoschisis was observed in 8 of 15 eyes (53%), fibrovascular adhesions between the detached hyaloid and retina were seen in 7 of 15 eyes (47%) and vitreous aggregations/clumps were visible in 9 of 15 eyes (60%) with diabetic retinopathy. Conclusions: SS-OCT with registration followed by application of the HDR method provides wide-field three-dimentional information of the posterior vitreous and the vitreoretinal interface in eyes with diabetic retinopathy. A detailed observation of these features may be useful in assessing the progression of diabetic retinopathy, planning diabetic vitreous surgery and predicting treatment outcomes. Commercial Relationships: Mehreen Adhi, None; Jonathan J. Liu, None; Martin F. Kraus, Optovue Inc (F); Ireneusz Grulkowski, None; Andre J. Witkin, None; Caroline R. Baumal, None; Joachim Hornegger, Optovue Inc (F); James G. Fujimoto, Carl Zeiss Meditech, Inc (F), Optovue, Inc (F); Jay S. Duker, Carl Zeiss Meditech, Inc (F), Optovue, Inc (F); Nadia K. Waheed, None Support: This work was supported in part by a Research to Prevent Blindness Unrestricted grant to the New England Eye Center/Department of Ophthalmology, Tufts University School of Medicine, NIH contracts R01-EY11289-27, R01-EY13178-12, R01EY013516-09, R01-EY018184-05, Air Force Office of Scientific Research FA9550-10-1-0551, FA9550-10-1-0063 and FA9550-12-10499 and the Massachusetts Lions Club. Program Number: 308 Poster Board Number: B0286 Presentation Time: 8:30 AM–10:15 AM Complications of Intravitreal Ocriplasmin in the Treatment of Symptomatic Vitreomacular Adhesion Henry L. Feng, Daniel B. Roth, Kunjal K. Modi, Howard F. Fine, Harold M. Wheatley. Robert Wood Johnson Medical School, Piscataway, NJ. Purpose: Ocriplasmin is a proteolytic enzyme approved for treatment of symptomatic vitreomacular adhesion (VMA). Our study evaluates the features of our initial series of eyes treated with intravitreal ocriplasmin in order to determine potential complications with this agent. Methods: Retrospective review of 62 eyes with symptomatic VMA associated with vision loss and anatomic macular distortion. Each eye was treated with a pars plana injection of ocriplasmin (125mcg in 0.1cc) and assessed at 1 week and 1 month post-injection using OCT, with added follow-up in complicated cases. Associated conditions included macular hole (MH), cystoid macular edema, diabetic macular edema, myopic schisis, epiretinal membrane, and dry AMD. Results: Initial enlargement in MH width after injection occurred in 54% of MH eyes. 100% of eyes with MH enlargement required surgical MH closure vs. 27% in those without MH enlargement (p=0.001). In MH-enlarged eyes, best visual acuity (VA) attained within 8 months post-surgery was significantly lower than that attained by non-MH-enlarged eyes within 8 months post-injection (p=0.001, mean VA 20/112 vs. 20/34). MH enlargement was not associated with differences in age, pre-injection VA, VMA width, or MH width (p=0.82, 0.43, 0.21, 0.69). Subretinal fluid (SRF) developed after injection in 37% of eyes without initial SRF. In this subset, SRF resolved surgically in 35% and spontaneously in 35%, but 30% remained unresolved over a mean follow-up of 5 months. Eyes with spontaneous SRF resolution resolved over a range of 1 to 4 months with a mean of 2 months. However, there was no difference between SRF eyes and non-SRF eyes in VA at 1 week (p=0.11) or best VA over 8 months follow-up (p=0.24). No eyes in our series experienced new ellipsoid layer disruption. Subjective visual worsening was reported during the initial 2 days after injection in 43% of eyes, with objective VA decline in 20% and 33% at 1 week and 6 weeks, respectively. Photopsia and dyschromatopsia was reported in 48% and 15% of eyes, respectively. Conclusions: Ocriplasmin may effectively achieve vitreomacular separation in eyes with symptomatic VMA. However, MH enlargement and SRF development may increase the likelihood of requiring surgical intervention and negatively impact VA. An understanding of potential complications and appropriate patient expectations are vital in the management of symptomatic VMA with ocriplasmin. Commercial Relationships: Henry L. Feng, None; Daniel B. Roth, Bayer (C), Forsight Labs (C), Ohr (C), Regeneron (C), Thrombogenics (C); Kunjal K. Modi, None; Howard F. Fine, Allergan (C), Auris Surgical Robotics (C), Genentech (C), Regeneron (C); Harold M. Wheatley, None Support: Thrombogenics Unrestricted Educational Grant Program Number: 309 Poster Board Number: B0287 Presentation Time: 8:30 AM–10:15 AM A RETROSPECTIVE COHORT STUDY IN PATIENTS WITH DISEASES OF THE VITREOMACULAR INTERFACE (ReCoViT) Peter Stalmans1, Benedicte Lescrauwaet2, Koenraad Blot2. 1 Department of Ophthalmology, Universitaire Ziekenhuizen Leuven, Leuven, Belgium; 2Xintera Ltd., London, United Kingdom. Purpose: Data on vitreomacular (VM) pathology are scarce. The purpose of this study was to characterize OCT-based ocular features present in patients diagnosed with diseases of the VM interface: vitreomacular adhesion (VMA), vitreomacular traction (VMT) and macular hole (MH), associated symptomatology, and rates over time of interventions and of spontaneous resolution. Methods: Retrospective, single-center, observational study. The cohort included patients from a large tertiary care ophthalmology center in Flanders, who had at least 1 outpatient visit between July 2009 and August 2013, when only watchful waiting and vitrectomy were available as treatment options, before the era of pharmacological vitreolysis. Patients were enrolled with OCT findings related to disorders of the VM interface, with or without visual symptoms. Patients diagnosed with concurrent retinal disorders influencing visual acuity and patients with isolated epiretinal membrane were excluded. Survival curves were performed for timeto-event analysis. Results focus on eyes with baseline VM interface pathology and with at least one follow-up visit. Results: The total cohort included 687 eyes from 500 patients, of which 557 eyes from 401 patients had at least one follow-up visit (analysis population). The majority of eyes presented with MH without VMT (236/557, 42.4%), or VMT alone (223/557, 40.0%). Of the patients with at least one follow-up, 23.9% of VMT eyes had a vitrectomy performed within 1 year of diagnosis, and the chances of spontaneous resolution within 1 year were 21.5%. In eyes followed for MH with VMT at baseline, progression to MH without VMT occurred in 17.4% within 1 year. Metamorphopsia was the reason for referral in 22.3% of patients with VMT, and in 60.9% of patients with MH with VMT. A high proportion of the 401 patients (38.9%) also had VM pathology in the fellow eye. Conclusions: Metamorphopsia was a hallmark symptom of vitreomacular pathology, and the prevalence of metamorphopsia in eyes with diseases of the VM interface may be highly underestimated. Frequently disease of the VM interface is found bilaterally. In eyes ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts with VMT and VMT+MH, rates of spontaneous resolution within 1 year were small, and a significant number required vitrectomy. A watchful waiting approach in these eyes may delay treatment intervention and increase the risk of disease progression. Commercial Relationships: Peter Stalmans, Alcon, Inc. (C), Bausch & Lomb, Inc. (F), DORC International B.V./Dutch Ophthalmic USA (R), ThromboGenics NV (F); Benedicte Lescrauwaet, ThromboGenics NV (C); Koenraad Blot, ThromboGenics NV (C) Support: Scientific Sponsorship Agreement from ThromboGenics NV Program Number: 310 Poster Board Number: B0288 Presentation Time: 8:30 AM–10:15 AM Foveal Detachment after Idiopathic Macular Hole Surgery Ramin Tadayoni, Elise Boulanger-Scemama, Aude Couturier, Rabih Hage, Pascale Massin, Alain Gaudric. Ophthalmology, Lariboisiere University Hospital, Paris, France. Purpose: To determine the incidence and dimensions of foveal detachment (FD) following idiopathic macular hole (MH) surgery and to identify its clinical and anatomical risk factors. Methods: A retrospective analysis was performed on 100 eyes from 100 consecutive patients who had undergone vitrectomy and gas tamponade for idiopathic macular hole. We specifically studied postoperative FD, taking care to distinguish it from outer foveal defect in photoreceptors lines without actual detachment. The anatomical features of FD were analyzed on postoperative spectraldomain optical coherence tomography (SD-OCT) and correlated with morphological and clinical data at baseline, 1 month and 3 months postoperatively. The size of defect was measured and compared with preoperative MH base diameter. Results: A FD was found on postoperative SD-OCT of 18% (12/65) of eyes at 1 month and only 4% (3/70) of eyes at 3 months after surgery. The base diameter of the defect at 1 month (371±92 μm) and 3 months (341±104 μm) postoperatively were always smaller than the preoperative MH base diameter (766±203 μm). The only factor significantly associated with persistence of a FD was a higher preoperative central macular height (P=0.012). Results showed no statistical difference in postoperative visual acuity between eyes with and without FD and all cases reattached spontaneously. Conclusions: This is the first SD-OCT study of post-operative FD after MH surgery. These FD were rare, especially at 3 months, and reattached spontaneously. The base diameter of FD was always smaller than the preoperative MH base diameter, and its presence was correlated to the macular height, suggesting that these FD are remnant of the preoperative macular elevation. Commercial Relationships: Ramin Tadayoni, Alcon (C), Alimera (C), Allergan (C), Bausch & Lomb (C), Bayer (C), FCI-Zeiss (C), Novartis (C), Thrombogenics (C); Elise Boulanger-Scemama, None; Aude Couturier, None; Rabih Hage, None; Pascale Massin, None; Alain Gaudric, None Program Number: 311 Poster Board Number: B0289 Presentation Time: 8:30 AM–10:15 AM MICROSTRUCTURAL MACULAR CHANGES AFTER INTERNAL LIMITING MEMBRANE PEELING OBSERVED IN SPECTRAL DOMIAN OPTICAL COHERENCE TOMOGRAPHY Mariana Flores, Carla Perez. Hospital Nuestra Señora de la Luz, Distrito Federal, Mexico. Purpose: Describe using spectral domain-optical coherence tomography (SD-OCT), the microstructural changes after internal limiting membrane (MLI) peeling in the treatment of macular hole. Methods: Complete ophthalmic examination and SD-OCT preoperatively and also at 1 month and 3 months postoperatively. Vitrectomy and gas tamponade were performed with MLI peeling after staining with brilliant peel. DESIGN: Prospective, longitudinal, descriptive, case series. MAIN OUTCOME MEASURES: The integrity of the photoreceptor inner segment/outer segment (IS/OS) junction, the external limiting membrane (ELM) on SD-OCT images and the BCVA. Results: 9 patients with macular hole closed up. In the first month postoperative BCVA was 0.2 logMAR . Microstructural changes were found in 100 % of patients. ELM complete restoration in 88.8%, IS/ OS juntion 22.2 % and interdigitation zone in 11.1 % . At 3 months postoperative BCVA was 0.14. ELM intact in 100%, IS/OS juntion 44.4%, interdigitation zone 33.3 %. Conclusions: The complete restoration of the ELM and IS/OS juntion predict potential better visual outcomes in the pacientes of macular hole closed up. Commercial Relationships: Mariana Flores, None; Carla Perez, None Program Number: 312 Poster Board Number: B0290 Presentation Time: 8:30 AM–10:15 AM Persistent Macular Holes after Vitrectomy Combined With Routine Peeling of the Internal Limiting Membrane (ILM) Lochan Bellamkonda1, Kamal Kishore1, 2. 1Illinois Retina Institute, Peoria, IL; 2Surgery, University of Illinois College of Medicine Peoria Campus, Peoria, IL. Purpose: To investigate predictive factors for persistent macular holes following vitrectomy, gas and peeling of ILM, and report on the outcomes following repeat vitrectomy procedure for such eyes. Methods: A retrospective chart review of 152 eyes of 143 consecutive patients undergoing surgery for idiopathic full-thickness macular holes between April, 2003 and June, 2013 by a single surgeon was conducted. Six eyes failed to close after initial surgery. Patients’ age, hole size, duration of symptoms, lens status, gas tamponade, preop visual acuity (VA) were analyzed to investigate predictive factors for persistence. Data were collected on anatomical and visual outcomes following repeat surgery for these holes. Size was measured with OCT (81 eyes) or on fundus photos (remaining eyes). Face-down (FD), or eye-down (ED) positioning for one (SF6) to two (C3F8) wks was utilized during initial surgery. Repeat surgery, after a mean of 6 (range 3-10) wks, consisted of ILM peeling over a wide area, almost to the arcade, and 18% C3F8 tamponade followed by 2 wks of FD or ED positioning. For ED positioning, patients were advised to read or perform fine visual task such as watching a movie gazing at a book or electronic device placed horizontally at or below their chest level. They were also advised to take 10 minutes break every hr. Diluted (1:10) triamcinolone acetonide was used to help visualize ILM during repeat surgery, and most cases of primary surgery. Two-sample t-test and Fisher Exact test were used for statistical analysis. Results: No statistically significant difference was observed between “Successful” and “Persistent” groups in the parameters studied (Table). All six persistent holes closed after repeat surgery. After 5-17 (mean 9+/-5) follow up, 3 eyes gained >0.2 logMAR, one eye was stable, and two eyes suffered decline in >0.2 logMAR (one due to cataract and other due to dry AMD). Mean gain in VA, and final VA after repeat surgery were 0.25 and 0.78 (Snellen 20/120) logMAR, compared to 0.3 and 0.46 (Snellen 20/60) logMAR for “successful” group, P=0.83, and 0.07. Conclusions: Success rate for initial surgery was 96%, and remaining holes closed with repeat surgery. Patients with hole closure after initial surgery showed a tendency towards better final VA. We ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts were unable to find statistically significant preoperative parameters between the two groups. Commercial Relationships: Lochan Bellamkonda, None; Kamal Kishore, None Program Number: 313 Poster Board Number: B0291 Presentation Time: 8:30 AM–10:15 AM Macular Pucker Lowers Contrast Sensitivity which Improves After Surgery Justin Nguyen1, Kenneth M. Yee1, 2, Christianne A. Wa1, 2, Alfredo A. Sadun2, J Sebag1, 2. 1VMR Institute, Huntington Beach, CA; 2Doheny Eye Institute, Los Angeles, CA. Purpose: Macular pucker may reduce contrast sensitivity by altering inner retinal function. Interference with incident light by the detached posterior vitreous cortex as a result of posterior vitreous detachment (PVD) and the premacular membrane may further reduce contrast sensitivity. It is thus hypothesized that patients with macular pucker will have lower contrast sensitivity compared to controls and that this will improve following vitrectomy with membrane peeling. Methods: A total of 23 eyes were studied. B-scan ultrasonography (Aviso, Quantel, France) was performed in 16 eyes of 8 patients (5 females, 3 males; 71 ± 12 years) with unilateral macular pucker. Contrast sensitivity was measured prospectively in the 8 eyes of these 8 patients with clinically significant macular pucker. Findings were compared to the fellow eyes as well as to 7 eyes of 7 agematched controls (4 females, 3 males; 66 ± 4 years) using Freiburg acuity contrast testing [Weber index: %W = (Maximum Luminance – Minimum Luminance) / Maximum Luminance] performed at a spatial frequency of 5 cpd. The lower the Weber index, the better the contrast sensitivity. Sutureless 25 Gauge vitrectomy with membrane peeling was performed without chromodissection in the macular pucker eyes by one surgeon (JS). Results: All (8/8; 100%) macular pucker eyes had PVD with a detached posterior vitreous cortex detected by ultrasound. Average pre-operative contrast sensitivity in patients with macular pucker was 6.41 ± 2.11 %W, which was significantly worse than age-matched controls (2.96 ± 1.82 %W; P<0.012), and the fellow eyes (3.55 ± 2.14 %W; P<0.03). Contrast sensitivity improved at 1 week (4.03 ± 1.99 %W; P=0.05) and 1 month (3.63 ± 1.76 %W; P<0.04) postoperatively to levels essentially the same as the normal fellow eyes. Conclusions: Following PVD, macular pucker and the presence of a detached posterior vitreous cortex as well as a premacular membrane are associated with decreased contrast sensitivity when compared to the fellow eye and age-matched controls. Contrast sensitivity improves after vitrectomy with membrane peeling, suggesting that contrast sensitivity may be a useful index of disease severity and the response to surgical therapy for macular pucker. Commercial Relationships: Justin Nguyen, None; Kenneth M. Yee, None; Christianne A. Wa, None; Alfredo A. Sadun, None; J Sebag, None Program Number: 314 Poster Board Number: B0292 Presentation Time: 8:30 AM–10:15 AM An international multi-center investigation of macular holes: the European Vitreo-Retinal Society Macular Hole Study Ron A. Adelman1, Barbara Parolini3, Zofia Michalewska2, Didier Ducournau2. 1Ophthal & Visual Science, Yale Univ Sch of Medicine, New Haven, CT; 2EVRS, Nanes, France; 3Istituto Clinico S.Anna, Verona, Italy. Purpose: To investigate factors associated with outcome of macular hole repair. Methods: An international collaborative multi-center nonrandomized clinical study spanning 4 continents. Symptoms, signs, techniques, dyes, tamponades, post-operative positioning, success rate and complications were evaluated. Results: 4207cases of idiopathic macular hole were enrolled by 140 retina specialists from 28 countries. 85.7% of holes closed following vitrectomy and 59% gained at least 3 lines of visual acuity. After multivariate regression, predictors for hole closure include earlier stage, shorter duration of hole and staining (p<0.001). There was no statistically significant difference among dyes including ICG, trypan blue, brilliant blue and other dyes. Staining improved anatomical outcome, but it did not affect visual outcome. There was no statistically significant difference in success rate among a variety of tamponades. Factors associated with better visual outcome include: hole closure, better baseline visual acuity, earlier stage and shorter duration of hole (p<0.001). 6% of cases had Inverted ILM flap technique that was associated with good anatomical and visual outcome. Retinal tear was noted in 3.2% of cases. Conclusions: Early repair of macular hole was associated with a better visual outcome. Staining improved anatomical success but not visual success. There was no statistically significant difference among ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts dyes. Inverted ILM flap technique may be a promising technique for large macular holes. Commercial Relationships: Ron A. Adelman, None; Barbara Parolini, None; Zofia Michalewska, None; Didier Ducournau, None Program Number: 315 Poster Board Number: B0293 Presentation Time: 8:30 AM–10:15 AM The influence of cataract surgery on central choroidea and vitreomacular interaction Sandra Rezar, Stefan Sacu, Katharina Eibenberger, Michael Georgopoulos, Wolf Bühl, Christian Simader, Ursula SchmidtErfurth. Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria. Purpose: To evaluate the influence of cataract surgery on the central choroidea and vitreomacular interaction using two different OCT devices. Methods: We evaluated 33 eyes of 33 patients, 23 patients showing normal retinal architecture and 10 patients with diagnosis of agerelated macular degeneration (AMD). All patients were scheduled for cataract surgery. The patients underwent spectral-domain (SpectralisSD-OCT) and swept-source (SS-Topcon DRI) OCT measurements. 6x6mm (20°x20°) volume and 8.9mm line scans with SD-OCT using the enhanced depth imaging (EDI) mode for the visualization of the choroid. 6x6mm (512x64) and 12mm scans were performed using SS-OCT. Measurements were done before cataract surgery, one day, one week and one month thereafter. Results: We included 23 patients with normal fundus and mean age of 66±8.4 years and 10 patients with AMD and mean age of 76±11.5. Preoperative central choroidal volume (CCV) in patients with normal fundus was 0.21±0.06/0.20±0.06mm3 (SD/SS-OCT), 0.19±0.05/0.19±0.05mm3 one day after surgery, 0.19±0.05/0.19±0.05mm3 after one week and 0.20±0.06/0.21±0.07mm3 after one month, respectively (p>0.05). No significant changes were found regarding CCV after cataract surgery at each time point (p>0.05). AMD group showed a mean CCV of 0.16±0.05/0.16±0.07mm3 preoperative, 0.16±0.05/0.16±0.07mm3 one day after surgery, 0.16±0.05/0.15±0.05mm3 one week and 0.15±0.05/0.16±0.05mm3 after one months. The CCV was significant thinner in the patients with AMD (p=0.03), however, no significant different changes were observed after cataract surgery in this group and between the two devices (p>0.05). Preoperative, vitreomacular adhesion (VMA) was observed in 38%, vitreomacular traction (VMT) in 6%, macular vitreous detachment (MVD) in 13% and posterior vitreous detachment (PVD) in 41%. After one month VMA was seen in 33%, VMT in 4%, MVD in 22% and PVD in 41% with both SS and SD-OCT evaluations being identical. Conclusions: Successful cataract surgery does not seem to have an influence on CCV. Spectralis and Topcon devices show comparable outcomes concerning evaluation of central choroidea and vitreomacular interaction. Commercial Relationships: Sandra Rezar, None; Stefan Sacu, None; Katharina Eibenberger, None; Michael Georgopoulos, None; Wolf Bühl, None; Christian Simader, None; Ursula Schmidt-Erfurth, None Clinical Trial: 1876/2913 Program Number: 316 Poster Board Number: B0294 Presentation Time: 8:30 AM–10:15 AM Predisposing factors and prognosis of postoperative foveal detachment following successful macular hole (MH) surgery Athanasios Vachtsevanos1, 2, Vaggelis Lokovitis1, Solon Asteriades1, Athanasios Vakalis1, Dimitrios Koreas1, Stavrenia Koukoula1, Tranos Paris1. 1OPHTHALMICA Eye Clinic, Thessaloniki, Greece; 2Eye Clinic “O Agios Dimitrios” General Hospital, Thessaloniki, Greece. Purpose: To identify pre- and intraoperative risk factors that predispose to outer retinal fluid development following successful macular hole surgery. The natural course of the foveal detachment was also investigated. Methods: Thirty four eyes of 33 patients that underwent pars plana vitrectomy for idiopathic MH were studied. Best corrected visual acuity (BCVA), and Spectralis SD-OCT images were examined preoperatively and at 1, 3, 6 months postoperatively. Patients’ demographic characteristics, stage of macular hole and differentiation between surgeons regarding surgical technique were also recorded. Correlation between postoperative foveal detachment and the above possible explanatory variables were evaluated. Results: Postoperative presence of outer retinal fluid was observed in 13/34 (38%) eyes. In 9/13 of those eyes foveal detachment disappeared by 6 months but one patient developed lamellar hole leading to full thickness MH 26 months following initial surgery. Preoperative BCVA was 0.55 ± 0.23 improving to 0.33±0.2 in the final follow up. Postoperative VA was better in eyes that did not developed postoperative foveal detachment (0.40 ±0.23 vs 0.32±0.20) but did not reach statistical significance (p=0.30). Development of postoperative foveal detachment was associated with preoperative foveal vitreomacular traction (p=0.048), stage II MH (p=0.017) and smaller size of the closest distance between the MH edges (p=0.046). Conclusions: Postoperative foveal detachment is a common finding following successful MH surgery. Meticulous evaluation of preoperative clinical and OCT findings may disclose risk factors associated with this condition. Commercial Relationships: Athanasios Vachtsevanos, None; Vaggelis Lokovitis, None; Solon Asteriades, None; Athanasios Vakalis, None; Dimitrios Koreas, None; Stavrenia Koukoula, None; Tranos Paris, None Program Number: 317 Poster Board Number: B0295 Presentation Time: 8:30 AM–10:15 AM Long-Term Follow-Up Study on the Natural Progression of Lamellar Macular Holes Jessica Lee1, Rahul Mandiga1, 3, Lawrence J. Singerman2, Llewelyn Rao2. 1Ophthalmology, Case Western Reserve University, Cleveland, OH; 2Retina Associates of Cleveland, Cleveland, OH; 3North Carolina Retina Associates, Raleigh, NC. Purpose: To determine the natural progression of lamellar macular holes (LMH) and their visual prognosis in a large retrospective cohort of patients. Methods: The charts of 87 eyes of 78 patients with a diagnosis of macular hole by ICD coding (362.54) were identified from 20082013. The patient charts were retrospectively reviewed and only those patients with a diagnosis of a lamellar macular hole as confirmed by an Ocular Coherence Tomography (OCT) scans were included in the study. None of the patients had undergone surgery for lamellar macular hole repair. Baseline visual acuity (VA) and endpoint VA were recorded. Main outcome measures were best-corrected visual acuity (BCVA), influence of an epiretinal membrane (ERM) on the LMH, posterior vitreous detachment (PVD), and history of diabetes or hypertension. ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Results: The patients included 52 females and 26 males with a mean age of 71 years. The mean follow-up time was 3 years (range 1.83 months to 16 years). At the time of diagnosis, the mean visual acuity was 20/50. At the end of follow-up, the mean visual acuity was 20/60. More than 55% were found to have a PVD and 64% were found to have an ERM. Only 11% of LMH were associated with a concomitant diagnosis of diabetes mellitus and 52% of LMH were associated with hypertension. Conclusions: This long term study of a large cohort of patients revealed that the majority of LMH occurs in elderly women and is commonly associated with an ERM. LMH patients appear to have relatively good visual acuity that tends to remain stable with observation alone without requiring immediate surgical intervention. Commercial Relationships: Jessica Lee, None; Rahul Mandiga, None; Lawrence J. Singerman, None; Llewelyn Rao, None Program Number: 318 Poster Board Number: B0296 Presentation Time: 8:30 AM–10:15 AM Wide-field OCT and vitreo-retinal adherence Matteo G. Cereda, Ferdinando Bottoni, Sara Bochicchio, Claudia Orini, Giovanni Staurenghi. Dpt. of Clinical and Biomedical Science “Luigi Sacco”, Eye Clinic Sacco Hospital Milan Italy, Milano, Italy. Purpose: to show the ability of wide-field OCT (montage images of OCT B-scans obtained on the same line) to visualize the relationship between the vitreous and the retina at the posterior pole, optic nerve and the retina till the mid-periphery Methods: Consecutive, observational case series. 38 eyes of 36 consecutive patients with macular pucker (3 eyes), macular hole (5), lamellar macular hole (7), vitreo-macular traction (9) and normal (14) were included. Montage images of at least 3 OCT B-scans (Heidelberg Spectralis, Heidelberg Engeneering, Germany) (horizontal and vertical through the fovea) were obtained in each case; montage images were composed using picture editing software (Photoshop Elements version 11; Adobe, San Jose, CA) Results: All 76 montage images were created and all had good quality. In 6 eyes vitreous was not visible in both horizontal and vertical montage images (5 lamellar macular hole and 1 pucker). In other 6 eyes vitreous was visible as full adherent to the retina in both horizontal and vertical montage images (5 normal and 1 traumatic macular hole). In the remaining 26 eyes (9 normal, 2 lamellar macular hole, 2 macular pucker, 9 vitreo-macular traction and 4 macular hole) shallows vitreous detachments were visible in different position and with different size showing an incredibly high variability between the same ocular conditions Conclusions: Wide-field OCT can clearly show a complete posterior vitreous detachment (when vitreous is not visible), a complete vitreo-retina adhesion (when vitreous is full adherent) and detailed information (including shape and extension) of shallow vitreous detachments. In the era of new therapeutic approach to vitreo-retinal interface diseases, including drugs and small invasive tools for surgery, an in deep knowledge of the vitreo-retinal relation could help ophthalmologists to properly manage patients. Wide-field OCT can show this information. OCT’s manufactures should improve their software including an automatic tool to create montage images Macular pucker with a complete posterior vitreous detachment. Vitreous is not visible in the montage image. Lamellar macular hole: vitreous is full adherent at the nasal side and optic nerve head, there is a shallow vitreous detachment in the fovea area and a small area of attachment in the temporal side. Commercial Relationships: Matteo G. Cereda, None; Ferdinando Bottoni, None; Sara Bochicchio, None; Claudia Orini, None; Giovanni Staurenghi, Allergan, Inc. (C), Canon (S), Glaxo Smith Kline (C), Heidelberg Engineering (C), Ocular Instruments, Inc. (P), OD-OS (C), Optovue (S), Pfizer Ophthalmics (C), Zeiss (S) Program Number: 319 Poster Board Number: B0297 Presentation Time: 8:30 AM–10:15 AM Intravitreal Ocriplasmin for Symptomatic Vitreomacular Adhesion David Warrow1, 3, Auvni Patel2, 3, Joseph Raevis2, Michael Lai1, 3. 1 Retina Group of Washington, Greenbelt, MD; 2Ophthalmology, Georgetown University School of Medicine, Washington, DC; 3 Ophthalmology, Medstar Washington Hospital Center, Washington, DC. Purpose: To determine the efficacy of a single intravitreal ocriplasmin injection to relieve symptomatic vitreomacular adhesion (VMA). Methods: This is a retrospective case review of 35 patients with symptomatic VMA who received intravitreal ocriplasmin injection at the Retina Group of Washington between February 2013 and November 2013. Extracted data included patient demographics, lens status, medical and ocular comorbidities, VMA size and duration, presence of epiretinal membrane (ERM), FTMH, cystoid macular edema (CME), posterior vitreous detachment (PVD), and optical coherence tomography (OCT) ellipsoid zone changes, FTMH size, best corrected visual acuity (BCVA), follow up, surgery, and complications. Primary endpoints included release of VMA and closure of FTMH. Secondary endpoints included rate of PVD induction and ellipsoid zone changes, change in BCVA, time to VMA release, and complications. Results: The mean subject age was 69.4 years, and 23 (66%) patients were female. 25 (71%) subjects were phakic, and 10 (29%) were pseudophakic. Nine subjects (26%) had retinal comorbidities. Mean VMA diameter was 571 micrometers, with average duration of 7.9 months prior to injection; 25 (71%) had associated CME, 9 (26%) had ERM, and 6 (17%) had FTMH, of mean size 186 microns. Mean pre-injection BCVA was 20/57 (0.46 LogMAR) and final BCVA was 20/43 (0.33 LogMAR). ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts VMA release occurred in 15 (43%) subjects after a mean 10.2 days after injection, with complete PVD noted in 12. Mean VMA diameter (p = 0.005) and duration (p = 0.03), absence of retinal comorbidities (p = 0.02), and mean age (p = 0.04) were predictive of VMA release. FTMH closure occurred in 1 of 6 cases (17%). Ellipsoid zone changes were seen in 10 (29%) patients. Eight (23%) subjects underwent surgery. Two (6%) patients had complications - one retinal detachment and one intraocular pressure spike. Mean follow up was 96 days. Conclusions: Intravitreal ocriplasmin may be a reasonable treatment option for patients with symptomatic VMA, and may be particularly useful in VMA of limited size and duration. Spectral domain optical coherence tomography (OCT) image prior to ocriplasmin injection of a 51 year old woman with a 261 micron vitreomacular adhesion (VMA) and impending full thickness macular hole. One week post-injection OCT of the same 51 year old woman, showing complete resolution of her VMA, with persistent subretinal fluid. Commercial Relationships: David Warrow, None; Auvni Patel, None; Joseph Raevis, None; Michael Lai, None Support: Lions Club of VIrginia Purpose: We report outcomes of management in 2 eyes with recurrent macular hole presenting with cystoid macular edema (CME). One eye was managed with repeat pars plana vitrectomy (PPV), internal limiting membrane (ILM) peel and C3F8 tamponade, the other was managed with periocular triamcinolone acetonide injections alone. Methods: Two patients, a 65 year old woman (Patient A) and a 71 year old man (Patient B), each with a history of a surgically managed and previously closed full thickness macular hole were found to have a recurrent macular hole with CME in their previously treated eye. Patient A presented with best corrected visual acuity (BCVA) of 20/50 in the affected eye, and underwent repeat surgical repair (PPV, ILM peel, C3F8 tamponade and periocular triamcinolone acetonide injection). Patient B presented with BCVA of 20/70 in the affected eye and non-operative management with serial periocular triamcinolone acetonide injections was undertaken. Results: Patient A: 3 months after repeat surgical repair, BCVA of the treated eye remained 20/50 with closure of the macular hole confirmed by optical coherence tomography (OCT). Foveal contour was restored despite mild remaining CME. Patient B received monthly periocular triamcinolone acetonide injections over a 3 month period. BCVA of the treated eye improved to 20/25 with closure of the macular hole confirmed by OCT. Foveal contour was restored and there was no evidence of continued CME. Conclusions: While treatment of the recurrent macular hole is classically surgical in nature, regardless of associated CME, nonoperative management is not well studied. Medical management, including periocular triamcinolone acetonide injections, might be considered in the treatment of the recurrent macular hole with CME. The best management technique for the recurrent macular hole with CME warrants further exploration. Top Left: Recurrent macular hole of Patient A prior to surgical repair. Top Right: Closed macular hole of Patient A at 3 month follow up visit showing mild CME. Bottom Left: Recurrent macular hole of Patient B prior to serial periocular triamcinolone acetonide injections. Bottom Right: Closed macular hole of Patient B after serial periocular triamcinolone acetonide injections. Commercial Relationships: Ross B. Chod, None; Levent Akduman, None Program Number: 320 Poster Board Number: B0298 Presentation Time: 8:30 AM–10:15 AM Surgical versus Medical Management of the Recurrent Macular Hole with Cystoid Macular Edema Ross B. Chod, Levent Akduman. Ophthalmology, St. Louis University Eye Institute, Clayton, MO. ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Program Number: 321 Poster Board Number: B0299 Presentation Time: 8:30 AM–10:15 AM Long Term Outcomes of 20G versus 23G Pars Plana Vitrectomy in the Treatment of Traumatic Macular Hole Khalid Al Rubaie1, Nicola G. Ghazi1, 2, Fernando J. Arevalo1, 3. 1 Ophthalmology, KKESH, Riadh, Saudi Arabia; 2Ophthalmology, University of Virginia, Charlottesville, VA; 3Ophthalmology, Wilmer Eye Institute, Baltimore, MD. Purpose: To compare the long-term results of 23- and 20-gauge pars plana vitrectomy (PPV) for traumatic macular hole (TMH) Methods: A retrospective, comparative case series of 29 consecutive eyes of 29 patients with TMH that underwent either 23- or 20-gauge PPV was conducted. The main outcome measure was the anatomical closure rate following surgery. Results: Among 29 patients, 6 (20.8%) were younger than 16 years. Twenty-five patients (86.2%) were males. Twenty gauge PPV was performed in 16 eyes (55.2%) and 23-gauge PPV was performed in the remaining 13 eyes (44.8%). Dye-assisted internal limiting membrane peeling was performed in all but 3 (10.3%) eyes. Anatomical failure was seen in a total of 11 eyes (37.9%). Among those, 6 eyes (54.4%) were in the 23-gauge PPV group and 5 (45.6%) in the 20-gauge PPV group. The success rate was not statistically significantly different between the two groups. None of the eyes developed retinal breaks or detachment. Conclusions: Twenty three-gauge PPV has a similar success rate to twenty-gauge PPV in TMH. Commercial Relationships: Khalid Al Rubaie, None; Nicola G. Ghazi, None; Fernando J. Arevalo, None Program Number: 322 Poster Board Number: B0300 Presentation Time: 8:30 AM–10:15 AM Visual and Anatomic Outcome in Eyes with Idiopathic Juxtafoveal Macular Telangiectasia (MacTel) and Full Thickness Macular Holes Undergoing Surgical Repair Poorav Patel1, Christina J. Flaxel1, 2. 1Oregon Health and Science University, Portland, OR; 2Casey Eye Institute, Oregon Health and Science University, Portland, OR. Purpose: To report visual and anatomic outcomes in eyes with idiopathic juxtafoveal macular telangiectasia (MacTel) undergoing small gauge vitrectomy surgery with gas tamponade for full thickness macular holes (FTMH) Methods: Medical records of all adult patients with the diagnoses of both MacTel and FTMH who were diagnosed and had surgery between 2003-2013 at Casey Eye Institute were reviewed. Preoperative and postoperative data were obtained including visual acuity and OCT imaging to evaluate the overall visual acuity changes and the macular hole closure rates. These cases were then compared with historical controls that also underwent surgical repair as well as those undergoing observation only. Results: Over a 10- year period, 2 cases that met the search criteria were identified (Patient A and B). Hole closure was obtained in 1 of 2 cases, with both cases requiring multiple procedures. Patient A is a 58 year-old woman with a VA OS of 20/400 and an OCT illustrating a macular hole greater than 500 microns, who underwent 3 surgical repairs including ILM peel without hole closure. Patient B is a 62 year-old gentlemen who presented with VA OD 20/200 and a macular hole of 320 microns, and underwent 5 surgical interventions with eventual hole closure. Overall, final visual acuity was unchanged in these cases. Six prior cases undergoing surgical repair have been reported in the literature. In 3 of these cases, the holes closed while in 3 cases the hole remained open. In addition, 3 cases had improved vision while 2 had no vision changes and the 3rd had reduced vision post- operatively. In those cases undergoing observation only, visual acuity tends to remain stable over time. Conclusions: Surgical intervention for MacTel and FTMH may not provide visual acuity benefit. Eyes with mactel tend to have stable visual acuity even with the development of a FTMH as the mechanism of hole formation is probably degenerative in nature rather than tractional with lateral separation of the photoreceptors and loss of Mueller cell structural support. Unless visual acuity decreases dramatically or definite vitreo-macular traction is noted, surgical intervention may not be beneficial. Commercial Relationships: Poorav Patel, None; Christina J. Flaxel, None Program Number: 323 Poster Board Number: B0301 Presentation Time: 8:30 AM–10:15 AM Vitreomacular Adhesion: Clinical Course and Outcomes Managed by Initial Observation Jonathan Tzu1, Vishak J. John1, Harry W. Flynn1, William Smiddy1, Adam Carver2, Robert Leonard2, Homayoun Tabandeh3, David S. Boyer3, Maria H. Berrocal4. 1Bascom Palmer Eye Institute, Miami, FL; 2Ophthalmology, Dean McGee Eye Institute, Oklahoma City, OK; 3Ophthalmology, Retina Vitreous Associates Medical Group, Los Angeles, CA; 4Ophthalmology, University of Puerto Rico, San Juan. Purpose: The purpose of this study is to investigate the clinical course and outcomes of patients with vitreomacular adhesion (VMA) and managed initially by observation Methods: The current study is a case series of patients with a diagnosis of vitreomacular adhesion based on clinical symptoms and findings on spectral domain optical coherence tomography (SD-OCT) between the years of 2005 and 2013. VMA was graded based on the degree of distortion of the foveal contour. Grade 1 is incomplete cortical vitreous separation with attachment at the fovea and visible distortion, Grade 2 is Grade 1 with any intraretinal cysts or clefts, and Grade 3 is Grade 2 findings with subretinal fluid beneath the fovea. Follow-up including visual acuity, changes in SD-OCT findings, and timing of the release of VMA as seen on SD-OCT were recorded. Results: VMA by SD-OCT from 4 retina clinics was identified in 139 eyes of 112 patients. Mean age was 73 years and mean time of follow up was 30 months. Baseline VMA grading was the following: Grade 1 - 52 eyes (37%), Grade 2 - 73 eyes (53%), and Grade 3 - 14 eyes (10%). By the last follow-up, spontaneous release of VMA occurred in 44 (32%) of eyes. Spontaneous release of VMA occurred at a mean of 16.8 months from initial visit and median of 9.8 months. At baseline, mean logMAR best corrected visual acuity (BCVA) was 0.26 (20/36) [range 20/20 to 20/200], and at last follow up was 0.28 (20/38) [range 20/20 to 20/400]. Pars plana vitrectomy was performed in 7 eyes (5.0%) [6 for macular hole, 1 for increased VMA] and BCVA outcomes were ≥ 20/40 in 6 of 7 eyes. Conclusions: In the current study, patients generally had a favorable clinical course when managed by initial observation. Spontaneous release of VMA occurred in 32% of patients, and pars plana vitrectomy was performed in 5% of patients by last follow-up. Commercial Relationships: Jonathan Tzu, None; Vishak J. John, None; Harry W. Flynn, None; William Smiddy, None; Adam Carver, None; Robert Leonard, None; Homayoun Tabandeh, None; David S. Boyer, None; Maria H. Berrocal, None Support: Supported by NIH Center Core Grant P30EY014801, Research to Prevent Blindness Unrestricted Grant, Department of Defense (DOD- Grant#W81XWH-09-1-0675). ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Program Number: 324 Poster Board Number: B0302 Presentation Time: 8:30 AM–10:15 AM Preclinical Identification of Eyes at risk of Developing Idiopathic Macular Hole — An Update Ana S. C. Silva1, João Figueira3, 4, Sílvia Simão4, Nuno Gomes5, Carlos Neves6, Angelina M. Silva7, Natália Ferreira7, Rui Bernardes2, 1 1 . IBILI, Faculty of Medicine at University of Coimbra, Coimbra, Portugal; 2Centre for New Technologies in Medicine, AIBILI, Coimbra, Portugal; 3Ophtalmology Service, Coimbra University Hospital, Coimbra, Portugal; 4AIBILI, Coimbra, Portugal; 5Braga Hospital, Braga, Portugal; 6North Lisbon Hospital Center, Lisbon, Portugal; 7St António Hospital, Porto Hospital Center, Porto, Portugal. Purpose: To discriminate healthy eyes from eyes with increased risk of developing idiopathic macular holes (IMH). Methods: Although causes for IMH aren’t fully understood, it is well known that patients with unilateral IMH have increased probability of developing IMH in their other eye (a risk increased by 10-20%). In this work, we present further evidence to the hypothesis presented in 2012 (Invest Ophthalmol Vis Sci 2012;53: E-Abstract 5219): that it is possible to detect this increased risk of developing IMH based on information present in an optical coherence tomography. Using Cirrus HD-OCT (Carl Zeiss Meditec, Dublin, CA, USA), we imaged the macular region of eyes at risk of developing IMH and eyes from a control group. In neither group were included eyes with glaucoma, myopia (> 3D) or other retinal pathology. To obtain a map of the retinal surface, the shape of the inner limiting membrane was depth-wise corrected by the retinal pigment epithelium. The surface shape is described by a set of parameters obtained by fitting a set of well-known 2D mathematical functions to the retinal maps. In addition, features from a set of bidimensional profiles are added, to improve discrimination, namely the curvature, angle at the fovea, and the volume of the foveal depression. A total of 27 parameters are thus computed per eye. Twenty-four eyes from 24 patients with unilateral IMH (18 women, age 67.2±6.8 years), and 32 eyes from 19 patients (13 women, age 59.3±7.3 years) were imaged and processed. We resort to support vector machines (SVM), a supervised learning model, to classify eyes into the group of healthy and at risk. To improve the performance of the classification, backward elimination and forward selection routines were ran to identify an optimal set of features. We used an N-fold cross-validation process (N=10) to determine the system performance. Results: For a reduced set of features we were able to achieve an accuracy of 83.6%, sensitivity of 66.7% and specificity of 96.8%. These results represent a step forward as compared to the ones previously presented by our group. Conclusions: The results here achieved not only reinforce the previously demonstrated possibility to identify eyes at risk of developing IMH using noninvasive imaging techniques, but also show that the improvements made over the last years are yielding positive results, demonstrating an increase in the reliability of our test. Commercial Relationships: Ana S. C. Silva, None; João Figueira, None; Sílvia Simão, None; Nuno Gomes, None; Carlos Neves, None; Angelina M. Silva, None; Natália Ferreira, None; Rui Bernardes, None Support: FCT project PTDC/BBB-BMD/2739/2012; COMPETE program FCOMP-01-0124-FEDER-028110; FCT project PEST-C/ SAU/UI3282/2013 and COMPETE program FCOMP-01-0124FEDER-037299 Clinical Trial: NCT01220804 Program Number: 325 Poster Board Number: B0303 Presentation Time: 8:30 AM–10:15 AM Morphology and Microstructure by en face OCT of Cystoid Cavities in Full Thickness Macular Holes Bruno Lumbroso1, Cristina Savastano2, 1, Marco Rispoli1. 1Centro Oftalmologico Mediterraneo, Rome, Italy; 2Ophthalmology, Catholic University, Rome, Italy. Purpose: Purpose: To compare Optical Coherence Tomography (OCT) transverse images at different retina levels in Full Thickness Macular Holes (FTMH) to understand the macular microstructure by en face OCT scans. In this presentation, we describe the different patterns of cystoid cavities of each retinal layers in macular holes, using transverse OCT. The aim of the study is to investigate the details of OCT en face images at different layer levels to understand the correlations between macular microstructure and edema cavities morphology. Methods: Methods: 24 eyes of 24 patients affected by cystoid cavities secondary to FTMH were evaluated by en face scans at different depths in the retina following exactly inner nuclear layer, outer plexiform layer and Henle layer and outer nuclear layer in eyes. We used transverse scans from Heidelberg Spectralis and from Optovue RTVue to generate tridimensional shape. The scan that better fitted to the interested layer was chosen to observe each layer isolated from the others. Results: Results: All eyes assessed with enface OCT showed morphological details corresponding to the analyzed layers. At Inner nuclear layer (INL) and Inner Plexiform Layer (IPL) the cavities are small and rounded related to the vertical part of Muller cells and Henle fiber. In the Outer Plexiform Layer (OPL) and Outer Nuclear Layer (ONL), cavities were larger. The shape and dimension of edema cavities in these layers were consistent with horizontal enlarged Muller cells bodies and the cavity separations were slanted. Conclusions: Conclusions: Enface OCT images provide a new layers analysis possibility in cystoid cavities related to FTMH. Macula microstructure visualization allows a better understanding and interpretation of Muller cells and Henle’s fibers structure in macular disorders. Commercial Relationships: Bruno Lumbroso, None; Cristina Savastano, None; Marco Rispoli, None Program Number: 326 Poster Board Number: B0304 Presentation Time: 8:30 AM–10:15 AM Aniseikonia and Foveal Microstructure Following Vitrectomy for Epiretinal Membrane Kuniharu Tasaki, Fumiki Okamoto, Yoshimi Sugiura, Yoshifumi Okamoto, Tetsuro Oshika. Ophthalmology, Tsukuba University, Ibaraki, Tsukuba, Japan. Purpose: To quantify the degree of aniseikonia in patients undergoing vitrectomy for epiretinal membrane (ERM), and to investigate the relationship between aniseikonia and foveal microstructures with spectral-domain optical coherence tomography (SD-OCT). Methods: This study included 44 eyes of 44 patients with idiopathic ERM. We examined visual acuity and aniseikonia with the New Aniseikonia Test and SD-OCT before and 3and 6 months after surgery. Based on the obtained OCT images, we quantified the following parameters using an image-processing program: central foveal thickness (CFT), mean thickness of the ganglion cell layer (GCL), inner nuclear layer (INL) and outer retinal layer (ONL+OPL: outer nuclear layer and outer plexiform layer). The status of the photoreceptor inner and outer segment junction (IS/OS), external limiting membrane (ELM), and cone outer segment tips (COST) were also evaluated. ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts Results: Thirty-nine of 44 patients (89%) had macropsia, 1 patient (2%) had micropsia, and 4 patients (9%) had no aniseikonia preoperatively. Mean preoperative aniseikonia score was 6.1 ± 4.7%. Vitrectomy significantly improved visual acuity in patients with ERM, but did not change the severity of aniseikonia. Multiple regression analysis revealed that preoperative aniseikonia was significantly related to preoperative INL thickness, while postoperative aniseikonia was associated with postoperative INL thickness. Preoperative INL thickness was found to be a significant prognostic factor for postoperative aniseikonia at 6 months. Conclusions: Most of the ERM patients had macropsia, which did not improve by surgery. The severity of aniseikonia was associated with preoperative INL thickness. Commercial Relationships: Kuniharu Tasaki, None; Fumiki Okamoto, None; Yoshimi Sugiura, None; Yoshifumi Okamoto, None; Tetsuro Oshika, None Program Number: 327 Poster Board Number: B0305 Presentation Time: 8:30 AM–10:15 AM Predictive factors for the spontaneous resolution of vitreomacular traction David Almeida1, Eric K. Chin1, James C. Folk1, Karim Rahim2, Stephen R. Russell1. 1Ophthalmology, Division of Retina, University of Iowa Hospitals & Clinics, Iowa City, IA; 2Queen, Kingston, ON, Canada. Purpose: To examine variables that are predictive for the spontaneous resolution of vitreomacular traction syndromes (VMT). It is currently unknown what factors, if any, are predictive for the spontaneous release of VMT. Methods: Retrospective case-control study of 61 patients with VMT and a minimum of three months of follow-up time. Optical coherence tomography (OCT) anatomic variables were characterized according to broad (>400 microns) versus focal (<400 microns) adhesions and by degree of inner versus outer retinal involvement. Treatment variables were investigated according to previous intravitreal injections of vascular endothelial growth factor (VEGF) inhibitors. Spontaneous release of VMT (VMT-SR) was defined as patients that experienced resolution of VMT with observation alone or following injection with anti-VEGF agents but without surgical intervention or ocriplasmin. A binary logistic regression model was created to ascertain significant prognostic variables predictive for the spontaneous release of VMT. Main outcome measures were defined as anatomic (OCT) and treatment (intravitreal injections) variables prognostic for the spontaneous release of VMT. Results: Of the 61 patients identified, 21 (35%) experienced spontaneous resolution of their VMT and 40 (65%) did not. Patients in the VMT-SR group were significantly associated with having only inner retinal distortion, but not outer retinal involvement, on OCT imaging (p=0.0129) and previous treatment with intravitreal injections of anti-VEGF (p=0.0181). Binary logistic regression modeling revealed anatomic (OCT inner retinal anatomy involvement, p=0.001597) and treatment (previous intravitreal injections, p=0.01127) factors as prognostic variables predictive of spontaneous release of VMT. Odds ratio (OR) for the anti-VEGF injections was 7.39 (sensitivity 0.52, specificity 0.88) and for the OCT anatomic variable was 10.45 (sensitivity 0.95, specificity 0.35). The combination of the injection and OCT variables resulted in an OR of 16.28 (p=0.0001662). Conclusions: Eyes with VMT causing only inner retinal distortion on OCT and or having previous or ongoing intravitreal injections of antiVEGF are more likely to develop spontaneous VMT release without the need for surgical intervention or ocriplasmin. These are novel findings that may help clinicians with management decisions when seeing patients with VTM. Commercial Relationships: David Almeida, None; Eric K. Chin, None; James C. Folk, None; Karim Rahim, None; Stephen R. Russell, None Program Number: 328 Poster Board Number: B0306 Presentation Time: 8:30 AM–10:15 AM Comparison of the Red Reflex from Three Surgical Microscopes Carl Chancy, Jim Schwiegerling, Justin Knight. College of Optical Sciences, University of Arizona, Tucson, AZ. Purpose: To evaluate the sensitivity of the red reflex to tilt for different surgical microscopes. Methods: We analyzed the optical performance of three surgical microscopes: the LuxOR Ophthalmic Microscope (Alcon Surgical), OPMI Lumera T (Carl Zeiss Meditec), and the Leica M-501 (Leica Microsystems). We assessed the red reflex and its sensitivity to eye rotation. A 1-inch diameter PMMA sphere was machined into an eye model. An aspheric cornea designed to focus incident light onto the back-side of the sphere. In addition, an 8 mm diameter Coddington pupil were machined into the solid sphere with single point diamond turning. The area around the pupil was painted black to form an opaque mask of the pupil, while the back side of the sphere was painted red to provide a reflex similar to the eye. The eye model was mounted under each microscope on a tilt stage. Photographs of the red reflex for tilt angles ranging from 0 to 20 degrees were captured. Camera settings and lighting conditions were identical across the three devices. The captured images were analyzed in a photo-editing program. A square patch of pixels within the pupil was analyzed and the average of the pixel values within the square was used as a measure of the red reflex intensity. Results: For the red reflex, the LuxOR had the brightest reflex compared to the other two microscopes. Furthermore, the red reflex was nearly invariant with eye rotation for the LuxOR, whereas the red reflex from the Lumera and the Leica microscopes demonstrated a falloff in intensity, as well as crescent-shaped artifacts with increased rotation. Conclusions: We demonstrated a system for evaluating the optical properties of surgical microscopes. The LuxOR microscope also provided a red reflex that was highly insensitive to eye rotation when compared to the other two microscopes. Commercial Relationships: Carl Chancy, Alcon Laboratories, Inc. (F); Jim Schwiegerling, Alcon Laboratories, Inc. (F); Justin Knight, None Support: Financial Support from Alcon Laboratories, Inc Program Number: 329 Poster Board Number: B0307 Presentation Time: 8:30 AM–10:15 AM Multimodal imaging of epimacular membranes Aurelie Brolly, Hassiba Bouakkaz, Sarah Ayello-Scheer, Céline Devisme, Alexandre Leseigneur, Jose A. Sahel, Michel Paques. CHNO des quinze-vingts, Paris, France. Purpose: To document the earliest stages of epiretinal membranes (ERMs) and the effect of the surgery using adaptive optics (AO) Methods: Prospective study of 23 patients with ERMs at various stages examined by AO flood imaging (ImagineEye, Orsay, France). Thirteen were observed over up to 18 months; while 10 underwent surgery and were followed one year. Results: AO allowed identifying ERMs at a very early stage (i.e. measuring less than 250mm); they were often plurifocal and located preferentially around vessels. Because ERMs were in all case highly anisotropic, multi-incidence analysis allows a better delimitation. The surface of ERMs presented a combination of diffuse blurring ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected]. ARVO 2014 Annual Meeting Abstracts surrounding a myriad of highly reflective, dots 10- 20 mm in diameter. In some cases, a noncontractile progression front surrounded the retractile center. Retinal folds molded retinal vessels. ERMS could be distinguished from the foldings of the inner limiting membrane. After surgery, retinal unfolding was noted, as well as residual ERM and early recurrences. Conclusions: AO is highly sensitive for the diagnosis of ERMs, and the delimitation of their extent. AO should also help understanding the pathogenesis of the membranes and their progression. AO may be of interest for the follow up of patients at risk for developing vitroretinal proliferation, for instance following retinal detachment surgery. Commercial Relationships: Aurelie Brolly, None; Hassiba Bouakkaz, None; Sarah Ayello-Scheer, None; Céline Devisme, None; Alexandre Leseigneur, None; Jose A. Sahel, None; Michel Paques, Imagineye (C) Support: ANR_09_TECS_009_01_IPHOT Clinical Trial: C10-03 ©2014, Copyright by the Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Go to iovs.org to access the version of record. For permission to reproduce any abstract, contact the ARVO Office at [email protected].