Age- Related Macular Degeneration
... common cause of severe, irreversible vision loss in older Americans and Europeans • Worldwide, AMD disease affects 25-30 million people. • Etiology is complex and poorly understood – Free-radical mediated damage to the photoreceptors and the RPE – Angiogenesis is a feature of neovascular AMD – AMD m ...
... common cause of severe, irreversible vision loss in older Americans and Europeans • Worldwide, AMD disease affects 25-30 million people. • Etiology is complex and poorly understood – Free-radical mediated damage to the photoreceptors and the RPE – Angiogenesis is a feature of neovascular AMD – AMD m ...
LASIK may be a successful treatment for amblyopia
... LASIK Surgery News: Research: LASIK may be a successful treatment for amblyopia ...
... LASIK Surgery News: Research: LASIK may be a successful treatment for amblyopia ...
Changes in glucose level affect rod function more than cone
... Changes in Glucose Level Affect Rod Function More Than Cone Function in the Isolated, Perfused Cat Eye Claudio Macaluso,* Shoken Onoe,t and Gunter Niemeyer The glucose concentration (gl) in mammalian serum incorporates a normal range of variation of several millimoles. We studied the effects of such ...
... Changes in Glucose Level Affect Rod Function More Than Cone Function in the Isolated, Perfused Cat Eye Claudio Macaluso,* Shoken Onoe,t and Gunter Niemeyer The glucose concentration (gl) in mammalian serum incorporates a normal range of variation of several millimoles. We studied the effects of such ...
Experimental porcine models of retinal ischemia
... Retinal ischaemia ensues when the retinal circulation is insufficient to meet the metabolic demands of the retina. This is most commonly caused by local circulatory failure resulting from vascular disease. The major diagnostic entities are diabetes mellitus, retinal vein thrombosis and retinal arter ...
... Retinal ischaemia ensues when the retinal circulation is insufficient to meet the metabolic demands of the retina. This is most commonly caused by local circulatory failure resulting from vascular disease. The major diagnostic entities are diabetes mellitus, retinal vein thrombosis and retinal arter ...
pdf
... Maintains intraocular pressure and protects the globe. Disruption of the sclera can result from trauma (globe rupture; Figs 6 & 7) or secondary to degeneration, infection or inflammation. Sclera alters in thickness and shape throughout life. Sustained intraocular pressure in childhood can lead to di ...
... Maintains intraocular pressure and protects the globe. Disruption of the sclera can result from trauma (globe rupture; Figs 6 & 7) or secondary to degeneration, infection or inflammation. Sclera alters in thickness and shape throughout life. Sustained intraocular pressure in childhood can lead to di ...
Correlation of Aberrations With Visual Symptoms Using Wavefront
... that larger apertures had more aberrations, especially in eyes after LASIK, because the peripheral area of the laser treatment was captured and measured. When correlating visual symptoms with higher order aberrations, double vision was associated with horizontal coma at all pupil sizes analyzed, and ...
... that larger apertures had more aberrations, especially in eyes after LASIK, because the peripheral area of the laser treatment was captured and measured. When correlating visual symptoms with higher order aberrations, double vision was associated with horizontal coma at all pupil sizes analyzed, and ...
Printing - Philosophical Transactions of the Royal Society B
... blunt injury. They are responsible for up to 84 per cent of trauma-related retinal detachments. The detachment may evolve slowly, often years after the trauma. Diagnosis is often when central vision is affected from macular involvement or as an incidental finding during routine ophthalmic examinatio ...
... blunt injury. They are responsible for up to 84 per cent of trauma-related retinal detachments. The detachment may evolve slowly, often years after the trauma. Diagnosis is often when central vision is affected from macular involvement or as an incidental finding during routine ophthalmic examinatio ...
Chapter 13: Binocular Vision 1. Which is not a skill of visual
... a. 15 - age in years / 3 b. 18.5 - age in years / 3 c. 15 - age in years / 4 d. 18.5 - age in years / 4 46. The adaptive mechanism seen most often as an attempt by the visual system to eliminate diplopia and confusion is known as: (p261) a. strabismus b. accommodative insufficiency c. convergence ex ...
... a. 15 - age in years / 3 b. 18.5 - age in years / 3 c. 15 - age in years / 4 d. 18.5 - age in years / 4 46. The adaptive mechanism seen most often as an attempt by the visual system to eliminate diplopia and confusion is known as: (p261) a. strabismus b. accommodative insufficiency c. convergence ex ...
as a PDF
... considerations in immersive HMDs but may be less important in non-immersive HMDs. In fact, as noted by Peli6 and Davis,5 a wide field of view in a HMD may be difficult to use as large eye movements are needed and no head movements can be used to reduce an eccentric eye position. Here we consider in ...
... considerations in immersive HMDs but may be less important in non-immersive HMDs. In fact, as noted by Peli6 and Davis,5 a wide field of view in a HMD may be difficult to use as large eye movements are needed and no head movements can be used to reduce an eccentric eye position. Here we consider in ...
Complement Deposits on Ocular Tissues Adjacent to
... showing that complement, especially iC3b and its receptor (CR3), play a central role in the development of the disease.3 In our study, we examined different pathological conditions in mouse eyes to determine whether complement is involved in damage caused by different mechanisms. Experimental autoim ...
... showing that complement, especially iC3b and its receptor (CR3), play a central role in the development of the disease.3 In our study, we examined different pathological conditions in mouse eyes to determine whether complement is involved in damage caused by different mechanisms. Experimental autoim ...
comparison between panretinal photocoagulation and panretinal
... Diabetes Mellitus (DM) is a major medical problem with long-term systemic complications and affects individuals in their most productive years of life. The disease has considerable socioeconomic impact on the affected individuals and the society.1 Prevalence of diabetes is increasing day by day thro ...
... Diabetes Mellitus (DM) is a major medical problem with long-term systemic complications and affects individuals in their most productive years of life. The disease has considerable socioeconomic impact on the affected individuals and the society.1 Prevalence of diabetes is increasing day by day thro ...
lateral geniculate nucleus
... and the area of the right LGN. It consisted of uniform, radiating, elongated cells, closely packed in fascicles: anteriorly, it was almost avascular and contained calcific deposits; posteriorly, in the region of the midbrain and LGN, it was pleomorphic, necrotic, and showed marked collateral hyperpl ...
... and the area of the right LGN. It consisted of uniform, radiating, elongated cells, closely packed in fascicles: anteriorly, it was almost avascular and contained calcific deposits; posteriorly, in the region of the midbrain and LGN, it was pleomorphic, necrotic, and showed marked collateral hyperpl ...
The effects of drift and displacement motion
... example of displacement motion could be a stimulus moving in a horizontal path along a fronto-parallel plane. The goal of our research was to verify if these two movements (drifting motion and displacement motion) are equivalent when measuring DVA, or, on the contrary, produce different results. Cur ...
... example of displacement motion could be a stimulus moving in a horizontal path along a fronto-parallel plane. The goal of our research was to verify if these two movements (drifting motion and displacement motion) are equivalent when measuring DVA, or, on the contrary, produce different results. Cur ...
- howMed Lectures
... Anisometropia in unilateral aphakia Aberrations Heavy lenses (glasses) Visual field limitation Loss of ultra-violet protection Other problems ...
... Anisometropia in unilateral aphakia Aberrations Heavy lenses (glasses) Visual field limitation Loss of ultra-violet protection Other problems ...
VITREOUS HEMORRHAGE
... Iron related toxicity becomes clinically manifest in extensive long standing vitreous hemorrhage. ...
... Iron related toxicity becomes clinically manifest in extensive long standing vitreous hemorrhage. ...
Visual Function and Cortical Organization in Carriers of Blue Cone
... the University of Rochester, Medical College of Wisconsin, and University of California, Berkeley. BCM carriers. BCM carrier participants were females recruited from families with males affected with BCM. Six female BCM carriers participated in these experiments, four of whom: JC_1041, JC_1043, JC_1 ...
... the University of Rochester, Medical College of Wisconsin, and University of California, Berkeley. BCM carriers. BCM carrier participants were females recruited from families with males affected with BCM. Six female BCM carriers participated in these experiments, four of whom: JC_1041, JC_1043, JC_1 ...
Contrast Sensitivity Measurements, Interpretation and
... perception when low contrast simulators were used on a driving course Wetton et al found that contrast sensitivity measurements correlated with detection and anticipation of hazards ...
... perception when low contrast simulators were used on a driving course Wetton et al found that contrast sensitivity measurements correlated with detection and anticipation of hazards ...
Correlation between Optical and Psychophysical Parameters as a
... these psychophysical estimates of spatial vision are quite useful, obtaining accurate results of the CSF is time-consuming, and the collaboration of the subjects is required. In some cases, this limits their use, in particular in those studies where a large number of conditions need to be analyzed. ...
... these psychophysical estimates of spatial vision are quite useful, obtaining accurate results of the CSF is time-consuming, and the collaboration of the subjects is required. In some cases, this limits their use, in particular in those studies where a large number of conditions need to be analyzed. ...
Nonproliferative retinopathy in diabetes type 2. Initial
... Pericyte damage has been reported as one of the earliest findings in diabetic retinal disease since the introduction of retinal digest studies (Cogan and Kwabara, 1963). However, pericyte apoptosis is more readily detectable than endothelial cell apoptosis, most probably because the pericytes are enc ...
... Pericyte damage has been reported as one of the earliest findings in diabetic retinal disease since the introduction of retinal digest studies (Cogan and Kwabara, 1963). However, pericyte apoptosis is more readily detectable than endothelial cell apoptosis, most probably because the pericytes are enc ...
Vision Screening for Children 1 to 5 Years of Age
... such as labeling and anxiety, unnecessary referrals because of falsepositive screening results, and unnecessary use of corrective lenses or treatments to prevent amblyopia, which can have potential effects on long-term vision or function. The USPSTF found limited evidence regarding the harms of visi ...
... such as labeling and anxiety, unnecessary referrals because of falsepositive screening results, and unnecessary use of corrective lenses or treatments to prevent amblyopia, which can have potential effects on long-term vision or function. The USPSTF found limited evidence regarding the harms of visi ...
Poster Presentations - American Optometric Association
... and with +3.00 over full correction. All testing was done at 4 Meters. There was a strong relationship between both methods of measuring visual acuity with the ETDRS charts in each of the four conditions. Within each condition, correlations between the two charts were high and statistically signific ...
... and with +3.00 over full correction. All testing was done at 4 Meters. There was a strong relationship between both methods of measuring visual acuity with the ETDRS charts in each of the four conditions. Within each condition, correlations between the two charts were high and statistically signific ...
Morgan, J.I.W., Dubra, A., Wolfe, R., Merigan, W.H., Williams, D.R.
... mal structure of the retina and for preserving normal photoreceptor function. Indeed, abnormal RPE cells contribute to disease mechanism and progression in numerous retinal diseases, including age-related macular degeneration, Stargardt’s dystrophy, Best’s disease, and others.1 Despite the important ...
... mal structure of the retina and for preserving normal photoreceptor function. Indeed, abnormal RPE cells contribute to disease mechanism and progression in numerous retinal diseases, including age-related macular degeneration, Stargardt’s dystrophy, Best’s disease, and others.1 Despite the important ...
Corneal Decompensation in Recessive Cornea Plana
... Recessive cornea plana (On-line Mendelian Inheritance in Man [MIM] #217300) is a bilateral anterior segment abnormality caused by homozygous mutation in KERA (MIM *603288).1 The distinct phenotype includes small flat corneas, variable deep corneal opacities, limbal haze, variable iris abnormality, a ...
... Recessive cornea plana (On-line Mendelian Inheritance in Man [MIM] #217300) is a bilateral anterior segment abnormality caused by homozygous mutation in KERA (MIM *603288).1 The distinct phenotype includes small flat corneas, variable deep corneal opacities, limbal haze, variable iris abnormality, a ...
leber's optic atrophy and its relationship with the heredo
... in successive generations. Furthermore, no characteristic mental or physical anomaly is known to occur among members of the family who themselves show no optic atrophy. The monographs of Habershon 2, Nettleship3, Favier4 and others who have carefully reviewed the literature, on the whole confirm thi ...
... in successive generations. Furthermore, no characteristic mental or physical anomaly is known to occur among members of the family who themselves show no optic atrophy. The monographs of Habershon 2, Nettleship3, Favier4 and others who have carefully reviewed the literature, on the whole confirm thi ...
Geng, Y., Greenberg, K.P., Wolfe, R., Gray, D.C., Hunter, J.J., Dubra
... progression and the effect of candidate therapies. Histopathology yields high-resolution images and morphometric estimates of surviving retinal cells1; however, the major drawback of this approach is that it does not allow longitudinal studies in the same animals. In vivo imaging of the rodent retin ...
... progression and the effect of candidate therapies. Histopathology yields high-resolution images and morphometric estimates of surviving retinal cells1; however, the major drawback of this approach is that it does not allow longitudinal studies in the same animals. In vivo imaging of the rodent retin ...
Retinitis pigmentosa
Retinitis pigmentosa (RP) is an inherited, degenerative eye disease that causes severe vision impairment due to the progressive degeneration of the rod photoreceptor cells in the retina. This form of retinal dystrophy manifests initial symptoms independent of age; thus, RP diagnosis occurs anywhere from early infancy to late adulthood. Patients in the early stages of RP first notice compromised peripheral and dim light vision due to the decline of the rod photoreceptors. The progressive rod degeneration is later followed by abnormalities in the adjacent retinal pigment epithelium (RPE) and the deterioration of cone photoreceptor cells. As peripheral vision becomes increasingly compromised, patients experience progressive ""tunnel vision"" and eventual blindness. Affected individuals may additionally experience defective light-dark adaptations, nyctalopia (night blindness), and the accumulation of bone spicules in the fundus (eye).