Visual Stimulus Delivery with the Adaptive Optics Scanning Laser
... • Each frame is defined by 480 horizontal lines • Each line is digitized @ 20 MHz sampling rate to create 512 pixels / line • For a 1 degree vertical field size, the pixel resolution is 8 arc seconds, which is higher than the cutoff frequency of the eye ...
... • Each frame is defined by 480 horizontal lines • Each line is digitized @ 20 MHz sampling rate to create 512 pixels / line • For a 1 degree vertical field size, the pixel resolution is 8 arc seconds, which is higher than the cutoff frequency of the eye ...
Snapshot hyperspectral retinal camera with the Image Mapping
... subject’s pulse of 72 bpm would suggest that the O2 saturation should peak about every 0.84 sec, or about twice as often as measured herein. A possible explanation may lie in the anomalous circulation on the optic disc in subjects with optic disc drusen [14,19], and in fact the central retinal arter ...
... subject’s pulse of 72 bpm would suggest that the O2 saturation should peak about every 0.84 sec, or about twice as often as measured herein. A possible explanation may lie in the anomalous circulation on the optic disc in subjects with optic disc drusen [14,19], and in fact the central retinal arter ...
Adaptive Optics - Delhi Journal of Ophthalmology
... fundus photographs. AOSLO has revealed microfolds 520 microns in size. A study has shown the correlation of metamorphopsia with these microfolds. Thus, AOSLO in patients of metamorphopisa with a normal looking fundus or a normal SDOCT may be able to provide evidence of structural abnormalities in th ...
... fundus photographs. AOSLO has revealed microfolds 520 microns in size. A study has shown the correlation of metamorphopsia with these microfolds. Thus, AOSLO in patients of metamorphopisa with a normal looking fundus or a normal SDOCT may be able to provide evidence of structural abnormalities in th ...
T35 Lab Activities for 2016 - New England College of Optometry
... Peter Bex’s lab is studying several visual deficits and there are projects available for students in each area. We use a combination of techniques including eye tracking and dichoptic/binocular stimulus control to study the effects of pathological and simulated visual impairment. In our age–related ...
... Peter Bex’s lab is studying several visual deficits and there are projects available for students in each area. We use a combination of techniques including eye tracking and dichoptic/binocular stimulus control to study the effects of pathological and simulated visual impairment. In our age–related ...
Growth of Fish Retinas1
... the autoradiographical results from which this scheme was developed are illustrated in Figure 3C. This is a histological section from the retina of a goldfish killed months after injection of [3H]thymidine Labeled cells in this section are distributed in a vertical band, which includes all three nuc ...
... the autoradiographical results from which this scheme was developed are illustrated in Figure 3C. This is a histological section from the retina of a goldfish killed months after injection of [3H]thymidine Labeled cells in this section are distributed in a vertical band, which includes all three nuc ...
C onference 20 - The Joint Pathology Center (JPC)
... autoimmune disease process, as well as the partial response to immunosuppressive therapy in dogs.1,2,5 Most cases reported appear to be localized to the eye, with rare reports that have evidence for other systemic immune-mediated disease, which is the case for humans with necrotizing scleritis.1 The ...
... autoimmune disease process, as well as the partial response to immunosuppressive therapy in dogs.1,2,5 Most cases reported appear to be localized to the eye, with rare reports that have evidence for other systemic immune-mediated disease, which is the case for humans with necrotizing scleritis.1 The ...
FUNDUS PHOTOGRAPHY: The Basics Laura Savage, COMT, CRA
... 4.) adjust brightness until just bright enough to see details in fundus a.) I apologize to patient and tell them "I will turn light down once focused" 5.) focus on the retina at the appropriate layer 6.) what do you see?? make adjustments a.) small pupil?? b.) dark or light fundus? ...
... 4.) adjust brightness until just bright enough to see details in fundus a.) I apologize to patient and tell them "I will turn light down once focused" 5.) focus on the retina at the appropriate layer 6.) what do you see?? make adjustments a.) small pupil?? b.) dark or light fundus? ...
Vitreous base avulsion
... (Optos) imaging with eye steered inferiorly showed vitreous base avulsion (figure 1). Rest of the ocular examination was within normal limits. The patient was reassured and advised regular follow-up. Vitreous base avulsion is considered to be pathognomonic of ocular blunt trauma. During trauma, there ...
... (Optos) imaging with eye steered inferiorly showed vitreous base avulsion (figure 1). Rest of the ocular examination was within normal limits. The patient was reassured and advised regular follow-up. Vitreous base avulsion is considered to be pathognomonic of ocular blunt trauma. During trauma, there ...
Elaine N. Marieb
... Visual Pathways • Axons of retinal ganglion cells form the optic nerve • Medial fibers of the optic nerve decussate at the optic chiasm • Most fibers of the optic tracts continue to the lateral geniculate body of the thalamus ...
... Visual Pathways • Axons of retinal ganglion cells form the optic nerve • Medial fibers of the optic nerve decussate at the optic chiasm • Most fibers of the optic tracts continue to the lateral geniculate body of the thalamus ...
Extrascleral Spread of Choroidal Melanoma via Tantalum Marker
... through episcleral channels was not observed. Instead, melanoma cells were seen neighboring and within suture material adjacent to the primary tumor site and at the site of posterior extrascleral extension (Figure 2). Discussion | Nearly half of recurrences of uveal melanoma are at the margin of the ...
... through episcleral channels was not observed. Instead, melanoma cells were seen neighboring and within suture material adjacent to the primary tumor site and at the site of posterior extrascleral extension (Figure 2). Discussion | Nearly half of recurrences of uveal melanoma are at the margin of the ...
4._Ocular_Manifestations_of_Systemic_Diseases
... OCULAR MANIFESTATIONS OF SYSTEMIC DISEASES The eye is intimately linked not only with the adjacent structures but also with the remote organs of the body. Ocular manifestations are so common in many systemic diseases that the ophthalmoscope is an essential part of the of every competent physician. N ...
... OCULAR MANIFESTATIONS OF SYSTEMIC DISEASES The eye is intimately linked not only with the adjacent structures but also with the remote organs of the body. Ocular manifestations are so common in many systemic diseases that the ophthalmoscope is an essential part of the of every competent physician. N ...
Avastin promising in eyes with branch and retinal vein occlusions
... anatomic and functional benefits without causing complications. Relative to alternatives, such as intravitreal steroid treatment, which is associated with high rates of glaucoma, cataract, and pseudoendophthalmitis, or panretinal laser photocoagulation, which can result in visual field loss, night b ...
... anatomic and functional benefits without causing complications. Relative to alternatives, such as intravitreal steroid treatment, which is associated with high rates of glaucoma, cataract, and pseudoendophthalmitis, or panretinal laser photocoagulation, which can result in visual field loss, night b ...
The regulatory role of hepatoma-derived growth
... and a cocktail of protease inhibitors (Sigma, St. Louis, MO)), and centrifuged at 800 ×g for 15 min. To prepare cytoplasmic fractionation, the supernatant was recentrifuged at 11,000 ×g for 10 min to remove additional cellular organelles. The supernatant was precipitated with cold 100% acetone (fina ...
... and a cocktail of protease inhibitors (Sigma, St. Louis, MO)), and centrifuged at 800 ×g for 15 min. To prepare cytoplasmic fractionation, the supernatant was recentrifuged at 11,000 ×g for 10 min to remove additional cellular organelles. The supernatant was precipitated with cold 100% acetone (fina ...
Effect of Axial Length on Retinal Vascular Network Geometry
... that for future studies exploring the effect of systemic cardiovascular risk factors on the retinal vascular network, axial length does not need to be considered as a confounding variable. Our findings agree with a recently published epidemiologic study that found no influence of refractive error on ...
... that for future studies exploring the effect of systemic cardiovascular risk factors on the retinal vascular network, axial length does not need to be considered as a confounding variable. Our findings agree with a recently published epidemiologic study that found no influence of refractive error on ...
II. Sensory Receptors
... B. Taste buds 1. In mammals, including humans, taste receptors are a type of chemoreceptor located in taste buds. 2. Adult humans have approximately 3,000 taste buds, located primarily on the tongue. 3. Taste buds have supporting cells, and a number of elongated taste cells end in microvilli at a ta ...
... B. Taste buds 1. In mammals, including humans, taste receptors are a type of chemoreceptor located in taste buds. 2. Adult humans have approximately 3,000 taste buds, located primarily on the tongue. 3. Taste buds have supporting cells, and a number of elongated taste cells end in microvilli at a ta ...
L9_Eye
... (motor endings), or to glands (secretory endings) • Terminals of dendrites, called sensory nerve endings or receptors, which perceive various stimuli and transmit this sensory input to the CNS ...
... (motor endings), or to glands (secretory endings) • Terminals of dendrites, called sensory nerve endings or receptors, which perceive various stimuli and transmit this sensory input to the CNS ...
Read PDF
... Place and Duration of Study: This study was conducted at Al-Shifa Trust Eye Hospital Rawalpindi from Jan 2012 to Dec 2013. Material and Methods: Twenty one eyes (21 patients) that underwent surgery for retinal detachment associated with chorio-retinal colobomas were selected. Evaluation was done on ...
... Place and Duration of Study: This study was conducted at Al-Shifa Trust Eye Hospital Rawalpindi from Jan 2012 to Dec 2013. Material and Methods: Twenty one eyes (21 patients) that underwent surgery for retinal detachment associated with chorio-retinal colobomas were selected. Evaluation was done on ...
Anterior chamber iris-fixated intraocular lens placement
... in the presence of an Artisan IOL may be the same if not better than that obtained with a standard posterior capsule IOL18. In the cases described here, intra-operative manipulations during SB or PPV were performed without difficulty. SB and PPV surgery were effective in the treatment of RD in these ...
... in the presence of an Artisan IOL may be the same if not better than that obtained with a standard posterior capsule IOL18. In the cases described here, intra-operative manipulations during SB or PPV were performed without difficulty. SB and PPV surgery were effective in the treatment of RD in these ...
A Novel Hereditary Developmental Vitreoretinopathy with Multiple
... Results: This novel, hereditary vitreoretinopathy, showing the classic features of vitreous pathology and earlyonset retinal detachments, was associated with a variety of ocular developmental abnormalities, including posterior embryotoxon, congenital glaucoma, iris hypoplasia, congenital cataract, e ...
... Results: This novel, hereditary vitreoretinopathy, showing the classic features of vitreous pathology and earlyonset retinal detachments, was associated with a variety of ocular developmental abnormalities, including posterior embryotoxon, congenital glaucoma, iris hypoplasia, congenital cataract, e ...
Class II histocompatibility antigen expression by cellular
... showed two major cell types in subretinal fluid: typical pigment epithelial cells and macrophage-like pigment-containing ones. In addition to classic cytologic procedures, we used immunocytologic methods to identify cellular components present in the vitreous and subretinal fluid of patients with PV ...
... showed two major cell types in subretinal fluid: typical pigment epithelial cells and macrophage-like pigment-containing ones. In addition to classic cytologic procedures, we used immunocytologic methods to identify cellular components present in the vitreous and subretinal fluid of patients with PV ...
Acute retinal necrosis - British Journal of Ophthalmology
... treatment strategies and outcomes for acute retinal necrosis (ARN) in the UK. Methods: A 12-month active case ascertainment study was carried out between March 2001 and March 2002 to record cases of ARN presenting to ophthalmologists via the British Ophthalmological Surveillance Unit (BOSU) reportin ...
... treatment strategies and outcomes for acute retinal necrosis (ARN) in the UK. Methods: A 12-month active case ascertainment study was carried out between March 2001 and March 2002 to record cases of ARN presenting to ophthalmologists via the British Ophthalmological Surveillance Unit (BOSU) reportin ...
Chronic use of chloroquine and/or hydroxychloroquine
... Color fundus photography is not part of the recommended screening but can be used for documentation. 1. There are NO visible changes in early disease: Document this! 2. In advanced stage: Bull’s eye maculopathy. Look for macular pigmentation change, specifically paracentral RPE pigment loss. a. Imag ...
... Color fundus photography is not part of the recommended screening but can be used for documentation. 1. There are NO visible changes in early disease: Document this! 2. In advanced stage: Bull’s eye maculopathy. Look for macular pigmentation change, specifically paracentral RPE pigment loss. a. Imag ...
Alimera Sciences Inc.
... Lomb, which began marketing Alaway in the spring of 2007. In the Pipeline: Alimera’s main product candidate is Iluvien, licensed from pSivida Corp. (Watertown, MA), a 20% profits interest holder. Iluvien is an intravitreal insert for the sustained delivery of fluocinolone acetonide to the posterior ...
... Lomb, which began marketing Alaway in the spring of 2007. In the Pipeline: Alimera’s main product candidate is Iluvien, licensed from pSivida Corp. (Watertown, MA), a 20% profits interest holder. Iluvien is an intravitreal insert for the sustained delivery of fluocinolone acetonide to the posterior ...
Soluble Tumor Necrosis Factor Alpha Promotes Retinal Ganglion
... GluA2 in neurons exposed to elevated eye pressure. Intraocular administration of selective CPAMPAR blockers promotes robust RGC survival supporting a critical role for non-NMDA glutamate receptors in neuronal death. Our study identifies glia-derived soluble TNFα as a major inducer of RGC death throu ...
... GluA2 in neurons exposed to elevated eye pressure. Intraocular administration of selective CPAMPAR blockers promotes robust RGC survival supporting a critical role for non-NMDA glutamate receptors in neuronal death. Our study identifies glia-derived soluble TNFα as a major inducer of RGC death throu ...