Profile of clear corneal cataract incisions demonstrated by ocular
... METHODS: The Zeiss Visante OCT anterior segment imaging system was used to study the profile of clear corneal cataract incisions, all in senior citizens. The OCT images of the operative eye were taken on the first postoperative day approximately 24 hours after surgery. The OCT images of clear cornea ...
... METHODS: The Zeiss Visante OCT anterior segment imaging system was used to study the profile of clear corneal cataract incisions, all in senior citizens. The OCT images of the operative eye were taken on the first postoperative day approximately 24 hours after surgery. The OCT images of clear cornea ...
Detachment of ciliary body--anatomical and physical
... point, and just posterior to the equator, but forming a chord between these two points as seen in the cross section (Fig. 4). That the separation progressed entirely around the half eye forming a truncated cone could be shown by pressing anywhere on the pars plana with a blunt instrument and observi ...
... point, and just posterior to the equator, but forming a chord between these two points as seen in the cross section (Fig. 4). That the separation progressed entirely around the half eye forming a truncated cone could be shown by pressing anywhere on the pars plana with a blunt instrument and observi ...
- IOP - Implandata Ophthalmic Products GmbH
... “true” IOP rather than the one inferred from changes in corneal curvature. It would also allow frequent measurements without the currently indispensable visit to a doctor’s office. ...
... “true” IOP rather than the one inferred from changes in corneal curvature. It would also allow frequent measurements without the currently indispensable visit to a doctor’s office. ...
Tesis_Enrique_Gambra
... This thesis addresses the study of the accommodation process of the human eye using multiple techniques in vivo. Although the mechanism of accommodation was thoroughly described in 1855 by Helmholtz, there are still many open questions. A better understanding of accommodation will help to develop so ...
... This thesis addresses the study of the accommodation process of the human eye using multiple techniques in vivo. Although the mechanism of accommodation was thoroughly described in 1855 by Helmholtz, there are still many open questions. A better understanding of accommodation will help to develop so ...
dislocated Posterior chamber intraocular Lens Management
... puncture the capsule. Once the polypropylene needle is docked into the 27-gauge needle, the polypropylene needle can be withdrawn from the eye either by pulling it with the 27-gauge needle or by pushing it while guiding it out of the eye with the 27-gauge needle. Step No. 8: Tying the polypropylene ...
... puncture the capsule. Once the polypropylene needle is docked into the 27-gauge needle, the polypropylene needle can be withdrawn from the eye either by pulling it with the 27-gauge needle or by pushing it while guiding it out of the eye with the 27-gauge needle. Step No. 8: Tying the polypropylene ...
Wnt/beta-catenin signaling in vertebrate eye development
... (Figure 1E). The migrating neural crest cells inhibit the lens specification, while their ablation results in ectopic lens formation (Bailey et al., 2006). In chick embryos, the neural crest cells secrete multiple TGFβs which activate WNT/β-catenin signaling by inducing WNT2b in the adjacent non-len ...
... (Figure 1E). The migrating neural crest cells inhibit the lens specification, while their ablation results in ectopic lens formation (Bailey et al., 2006). In chick embryos, the neural crest cells secrete multiple TGFβs which activate WNT/β-catenin signaling by inducing WNT2b in the adjacent non-len ...
Surgical outcomes of phototherapeutic keratectomy on
... epithelium, Bowman´s layer (BL), and subbasal nerves are disrupted or removed completely. Little is known about the microscopic effect of PTK on BL, nerves and stroma, how these structures recover after treatment, or how they could influence recurrence of EBMD after PTK treatment. Additionally, very ...
... epithelium, Bowman´s layer (BL), and subbasal nerves are disrupted or removed completely. Little is known about the microscopic effect of PTK on BL, nerves and stroma, how these structures recover after treatment, or how they could influence recurrence of EBMD after PTK treatment. Additionally, very ...
one vision2012 - University of Illinois College of Medicine at Chicago
... degenerative eye diseases such as agerelated macular degeneration (AMD). Diseases such as AMD destroy photoreceptor cells that sense light and start the visual process. However, other retinal cell types, while not normally ...
... degenerative eye diseases such as agerelated macular degeneration (AMD). Diseases such as AMD destroy photoreceptor cells that sense light and start the visual process. However, other retinal cell types, while not normally ...
OCULAR LYMPHATICS: STATE-OF-THE
... blockade promotes corneal transplant survival (22,24,31-33). From a broader perspective point of view, the cornea provides an ideal tissue for lymphatic studies due to its accessible location, transparent nature, and lymphatic-free and -inducible characteristics. A variety of corneal models have bee ...
... blockade promotes corneal transplant survival (22,24,31-33). From a broader perspective point of view, the cornea provides an ideal tissue for lymphatic studies due to its accessible location, transparent nature, and lymphatic-free and -inducible characteristics. A variety of corneal models have bee ...
Differences in Activities of Antioxidant Superoxide Dismutase
... Under normal conditions, antioxidants at the corneal surface are balanced with the production of reactive oxygen species without any toxic effects. Danger from oxidative stress appears when natural antioxidants are overwhelmed leading to antioxidant/prooxidant imbalance. The aim of the present study ...
... Under normal conditions, antioxidants at the corneal surface are balanced with the production of reactive oxygen species without any toxic effects. Danger from oxidative stress appears when natural antioxidants are overwhelmed leading to antioxidant/prooxidant imbalance. The aim of the present study ...
Lipid Deposition at the Limbus
... surface receptors which recognise both apo B-100 and apo E (B/E receptors). B/E recep tors are found on peripheral cells like fibro blasts. smooth muscle cells and endothelial cells as well as in the liver. By a well defined pathwayO LDL is taken into the cell and free cholesterol and amino acids ...
... surface receptors which recognise both apo B-100 and apo E (B/E receptors). B/E recep tors are found on peripheral cells like fibro blasts. smooth muscle cells and endothelial cells as well as in the liver. By a well defined pathwayO LDL is taken into the cell and free cholesterol and amino acids ...
Effects of nerve growth factor on nerve regeneration after corneal
... in the upper 1/3 of stroma and anatomy to form the subcutaneous plexus [3, 4]. Recent studies have found that a relatively uniform distribution of the nerve bundles along the limbus and get into the corneal randomly extend to the central cornea [3]. Bazan’s research team has recently drawn a three-d ...
... in the upper 1/3 of stroma and anatomy to form the subcutaneous plexus [3, 4]. Recent studies have found that a relatively uniform distribution of the nerve bundles along the limbus and get into the corneal randomly extend to the central cornea [3]. Bazan’s research team has recently drawn a three-d ...
Complications after LASIK or PRK: achieving excellent outcomes in
... High spherical aberration (small optical zone) In the early years of excimer laser treatments, a small optical zone was used for treatments as there was concern about the stability of the cornea if too much tissue was removed. It was quickly realized that this resulted in significant night vision ...
... High spherical aberration (small optical zone) In the early years of excimer laser treatments, a small optical zone was used for treatments as there was concern about the stability of the cornea if too much tissue was removed. It was quickly realized that this resulted in significant night vision ...
Optical Quality and Depth-of-field of Eyes Implanted With
... computational studies predict that tilt and decentration are more deleterious in aspheric than spherical surfaces.25 This study also compares third-order aberrations and investigates the sources of coma in pseudophakic eyes. In addition, corneal aberration changes for the two groups are discussed. M ...
... computational studies predict that tilt and decentration are more deleterious in aspheric than spherical surfaces.25 This study also compares third-order aberrations and investigates the sources of coma in pseudophakic eyes. In addition, corneal aberration changes for the two groups are discussed. M ...
Vision Loss in AmericA: Aging And Low Vision
... concern about how one looks and how noticeable the adaptive equipment is. Whether it’s a hearing aid, a walker or a low vision device, being embarrassed about an impairment can cause individuals to not seek proper care. For the vision-impaired, this stigma, coupled with lack of awareness about the t ...
... concern about how one looks and how noticeable the adaptive equipment is. Whether it’s a hearing aid, a walker or a low vision device, being embarrassed about an impairment can cause individuals to not seek proper care. For the vision-impaired, this stigma, coupled with lack of awareness about the t ...
Effect of timolol on central corneal thickness
... 34 ± 9 years (range 23-61 years) were tested by carrying out a double-blind, prospective study. All subjects had a normal ophthalmologic history. Subjects with serious medical or neurologic conditions, on local or systemic therapy with drugs, and contact lens wearers were excluded from the study. Al ...
... 34 ± 9 years (range 23-61 years) were tested by carrying out a double-blind, prospective study. All subjects had a normal ophthalmologic history. Subjects with serious medical or neurologic conditions, on local or systemic therapy with drugs, and contact lens wearers were excluded from the study. Al ...
Corneal Desiccation in Rigid Gas Permeable Contact Lens Wear
... Contact lenses, originally designed to correct severe optical irregularities of the human cornea, are widely used today to correct ametropia in non-pathological eyes. The basic idea of putting a refractive device directly on the eye has its origin in the early 16th century from the work of Leonardo ...
... Contact lenses, originally designed to correct severe optical irregularities of the human cornea, are widely used today to correct ametropia in non-pathological eyes. The basic idea of putting a refractive device directly on the eye has its origin in the early 16th century from the work of Leonardo ...
Eye Examination with the Slit Lamp.
... large as possible is counteracted by the demand for observation through limited apertures such as the pupil and contact lens mirrors (cf. 3.6 "Fundus observation and gonioscopy"). For this reason good slit lamp microscopes work with a convergence angle of between 10° and 15°. The SL 120 and SL 130 S ...
... large as possible is counteracted by the demand for observation through limited apertures such as the pupil and contact lens mirrors (cf. 3.6 "Fundus observation and gonioscopy"). For this reason good slit lamp microscopes work with a convergence angle of between 10° and 15°. The SL 120 and SL 130 S ...
PDF (pretty text) w/no figures - EECS at UC Berkeley
... University of California at Berkeley Professor Brian A. Barsky, Chair ...
... University of California at Berkeley Professor Brian A. Barsky, Chair ...
Change in Anterior Chamber Depth Following Vitrectomy
... The results were consistent with that of previous reports. However, when splitting the patients in two groups according to the diagnosis. The condition was different. In VH group, ACD did not change significantly as compared to that of their fellow eyes. The post-operative ACDs was neither statistic ...
... The results were consistent with that of previous reports. However, when splitting the patients in two groups according to the diagnosis. The condition was different. In VH group, ACD did not change significantly as compared to that of their fellow eyes. The post-operative ACDs was neither statistic ...
Outcomes of Corneal Spherical Aberration
... combines an ultraviolet and violet-light filtering chromophore to a biprolate, silicone optic that is aspherically neutral, and therefore will not add or subtract from pre-existing higher order aberrations. The SofPort lens has a uniform thickness and refractive power resisting the refractive effect ...
... combines an ultraviolet and violet-light filtering chromophore to a biprolate, silicone optic that is aspherically neutral, and therefore will not add or subtract from pre-existing higher order aberrations. The SofPort lens has a uniform thickness and refractive power resisting the refractive effect ...
Correlation of Central Corneal Thickness and Axial Length in
... corneal curvature, axial length, and age of the patient. The mean (SD) CCT was 547.80 ± 28.6 µ. Fam et al. in a study on 714 Chinese patients had a mean of 534.5 µ.1 Chang’s series had 533 µ, whereas Vijaya et al. reported it in the rural South Indian population as 505.9 µ.2 This study showed no sta ...
... corneal curvature, axial length, and age of the patient. The mean (SD) CCT was 547.80 ± 28.6 µ. Fam et al. in a study on 714 Chinese patients had a mean of 534.5 µ.1 Chang’s series had 533 µ, whereas Vijaya et al. reported it in the rural South Indian population as 505.9 µ.2 This study showed no sta ...
Wavefront Analysis for Keratoconus
... The wavefront RMS error value allows a brief comparison between different eyes. The higher-order RMS error is the vector sum of all the Zernike terms from the 3rd order and above. The main limitation of the RMS error is that it is only a single value, which does not represent information about the a ...
... The wavefront RMS error value allows a brief comparison between different eyes. The higher-order RMS error is the vector sum of all the Zernike terms from the 3rd order and above. The main limitation of the RMS error is that it is only a single value, which does not represent information about the a ...
Poster Session/ Cornea surgery, refractive
... Conclusions: Variations of WF aberrations up to TRMS=0.22um make a substantial contribution to the refractive treatment errors. Several pre-operative measurements followed with a careful selection and/or averaging algorithm are necessary to alleviate these errors. A fair comparison of CT and WF post ...
... Conclusions: Variations of WF aberrations up to TRMS=0.22um make a substantial contribution to the refractive treatment errors. Several pre-operative measurements followed with a careful selection and/or averaging algorithm are necessary to alleviate these errors. A fair comparison of CT and WF post ...
Contact lens
A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye. Contact lenses are considered medical devices and can be worn to correct vision, or for cosmetic or therapeutic reasons. In 2004, it was estimated that 125 million people (2%) use contact lenses worldwide, including 28 to 38 million in the United States. In 2010, worldwide contact lens market was estimated at $6.1 billion, while the U.S. soft lens market is estimated at $2.1 billion. Multiple scientists have estimated that the global market will reach $11.7 billion by 2015. As of 2010, the average age of contact lens wearers globally was 31 years old and two thirds of wearers were female.People choose to wear contact lenses for many reasons. Aesthetics and cosmetics are often motivating factors for people who would like to avoid wearing glasses or would like to change the appearance of their eyes. Other people wear contacts for functional or optical reasons. When compared with spectacles, contact lenses typically provide better peripheral vision, and do not collect moisture such as rain, snow, condensation, or sweat. This makes them ideal for sports and other outdoor activities. Contact lens wearers can also wear sunglasses, goggles, or other eyewear of their choice without having to fit them with prescription lenses or worry about compatibility with glasses. Additionally, there are conditions such as keratoconus and aniseikonia that are typically corrected better by contacts than by glasses.