Visual Acuity Is Correlated with the Area of the Foveal Avascular
... Methods: Structural optical coherence tomography (OCT; Spectralis, Heidelberg Engineering) and OCT angiography (OCTA; Avanti, Optovue RTVue XR) data from a single visit were analyzed. FAZ area, point thickness of central fovea, central 1-mm subfield thickness, the occurrence of intraretinal cysts, el ...
... Methods: Structural optical coherence tomography (OCT; Spectralis, Heidelberg Engineering) and OCT angiography (OCTA; Avanti, Optovue RTVue XR) data from a single visit were analyzed. FAZ area, point thickness of central fovea, central 1-mm subfield thickness, the occurrence of intraretinal cysts, el ...
GLARE
... To measure visual disability in mild cataract especially: decreased vision outdoor in bright sun. visual disability with night time driving. To distinguish decreased vision because of anterior segment pathology (media opacity) from retinal pathology. Glare sensitivity is markedly increased in anteri ...
... To measure visual disability in mild cataract especially: decreased vision outdoor in bright sun. visual disability with night time driving. To distinguish decreased vision because of anterior segment pathology (media opacity) from retinal pathology. Glare sensitivity is markedly increased in anteri ...
A comparison of Lea Symbol vs ETDRS letter distance visual acuity
... with preschool-aged children because of the difficulty young children have in identifying the 10 letters on the chart. The Lea Symbols chart3 was developed to provide a chart that conforms to the Committee on Vision standards2 and that can be used with children too young to be tested with Sloan lett ...
... with preschool-aged children because of the difficulty young children have in identifying the 10 letters on the chart. The Lea Symbols chart3 was developed to provide a chart that conforms to the Committee on Vision standards2 and that can be used with children too young to be tested with Sloan lett ...
Why Do Eyes Become Myopic?
... and ions,35-38 while RASGRF1 is a nuclear exchange factor involved in synaptic transmission of photoreceptor responses.39,40 Signaling defects in the retina became a likely cause for myopia. Following these reports, the international Consortium for Refractive Error and Myopia (CREAM) was formed to i ...
... and ions,35-38 while RASGRF1 is a nuclear exchange factor involved in synaptic transmission of photoreceptor responses.39,40 Signaling defects in the retina became a likely cause for myopia. Following these reports, the international Consortium for Refractive Error and Myopia (CREAM) was formed to i ...
- Wiley Online Library
... recently reported in a network metaanalysis on the subject (Huang et al. 2016). Specifically, lenses designed to impose myopic defocus on the peripheral retina slow axial length elongation (Liu & Wildsoet 2011), while the opposite effect is true for lenses imposing peripheral hyperopic defocus, that i ...
... recently reported in a network metaanalysis on the subject (Huang et al. 2016). Specifically, lenses designed to impose myopic defocus on the peripheral retina slow axial length elongation (Liu & Wildsoet 2011), while the opposite effect is true for lenses imposing peripheral hyperopic defocus, that i ...
Failed Deep Anterior Lamellar Keratoplasty in Avellino Stromal
... dimension of vision in the recent past without any associated ocular pathology. Examination revealed an Avellino’s stromal CD. Multiple white dots about 0.5 mm in diameter, studding the stroma not involving the endothelium, spread over central 8 mm with an interdigitating network of filaments. Deep a ...
... dimension of vision in the recent past without any associated ocular pathology. Examination revealed an Avellino’s stromal CD. Multiple white dots about 0.5 mm in diameter, studding the stroma not involving the endothelium, spread over central 8 mm with an interdigitating network of filaments. Deep a ...
OPHTHALMOL OG Y JOURNAL
... Making the Impossible Possible It’s been said that nothing is impossible for those with the courage to try. Over the last three years, the Robert Cizik Eye Clinic and Ruiz Department of Ophthalmology and Visual Science have doubled in size and expertise; affiliated physicians now offer diagnosis an ...
... Making the Impossible Possible It’s been said that nothing is impossible for those with the courage to try. Over the last three years, the Robert Cizik Eye Clinic and Ruiz Department of Ophthalmology and Visual Science have doubled in size and expertise; affiliated physicians now offer diagnosis an ...
View PDF
... uncorrected distant and near visual acuity, stereopsis test, cycloplegic refraction, best corrected visual acuity (BCVA), cover test and ocular movement examination. Visual acuity (VA) was measured with a logarithm of the minimum angle of resolution (logMAR) chart. Stereoacuity was measured with the ...
... uncorrected distant and near visual acuity, stereopsis test, cycloplegic refraction, best corrected visual acuity (BCVA), cover test and ocular movement examination. Visual acuity (VA) was measured with a logarithm of the minimum angle of resolution (logMAR) chart. Stereoacuity was measured with the ...
Take second look at - ModernMedicine.com
... Surgeons’ ability to reduce its rate, understand risk factors grows as population at risk expands IN VIEW: Hypoyon in the eye of a patient with acute bacterial endophthalmitis complicating cataract extraction. ...
... Surgeons’ ability to reduce its rate, understand risk factors grows as population at risk expands IN VIEW: Hypoyon in the eye of a patient with acute bacterial endophthalmitis complicating cataract extraction. ...
Internal Osmotic Pressure as a Mechanism of Retinal Attachment in
... ages, the vitreous develops liquefied pockets, characterized by a paucity of collagen [1], and eventually separates from the retina completely, except for the most anterior retina. This has been ascribed to aggregation of the collagen fibrils into thicker cables [4–7] as well as changes and thickeni ...
... ages, the vitreous develops liquefied pockets, characterized by a paucity of collagen [1], and eventually separates from the retina completely, except for the most anterior retina. This has been ascribed to aggregation of the collagen fibrils into thicker cables [4–7] as well as changes and thickeni ...
Calibration of Fundus Images Using Spectral Domain Optical
... Multiple scans of each type were performed to reduce the likelihood of motion artifact. If an entire set of one type of image from the right eye had poor signal strength or demonstrated a motion artifact, that patient was excluded. In this article, this technology will be referred to generically as ...
... Multiple scans of each type were performed to reduce the likelihood of motion artifact. If an entire set of one type of image from the right eye had poor signal strength or demonstrated a motion artifact, that patient was excluded. In this article, this technology will be referred to generically as ...
Lateral orbitotomy for traumatic optic neuropathy
... in traumatic optic neuropathy. To date it is not known whether lateral orbitotomy is beneficial in these traumatic injuries. There were 12 patients in this study, consisting of 11 males and 1 female with diagnosis of traumatic optic neuropathy in 10 patients and traumatic ophthalmoplegia in 2. Later ...
... in traumatic optic neuropathy. To date it is not known whether lateral orbitotomy is beneficial in these traumatic injuries. There were 12 patients in this study, consisting of 11 males and 1 female with diagnosis of traumatic optic neuropathy in 10 patients and traumatic ophthalmoplegia in 2. Later ...
Module - Mount Sinai Hospital
... however, will continue to change after birth. Rods outnumber the cones in density in the mid-peripheral area before birth, and the parafoveal area shows mature rod photoreceptors at birth, making them the principal photoreceptors in the far periphery. Postnatal development The visual system of the n ...
... however, will continue to change after birth. Rods outnumber the cones in density in the mid-peripheral area before birth, and the parafoveal area shows mature rod photoreceptors at birth, making them the principal photoreceptors in the far periphery. Postnatal development The visual system of the n ...
Traffic Injury Prevention Vision and Night Driving Abilities of Elderly
... in vision, some of which are age-related and others of which are disease-related. With increasing age, a loss in elasticity in the lens and changes in the ciliary muscles occur (Atchison 1995; Holland 2001), and both lead to an age-dependent decline in accommodative power to focus on near objects, a ...
... in vision, some of which are age-related and others of which are disease-related. With increasing age, a loss in elasticity in the lens and changes in the ciliary muscles occur (Atchison 1995; Holland 2001), and both lead to an age-dependent decline in accommodative power to focus on near objects, a ...
CURRICULUM VITAE - Boston Retinal Implant Project
... platform to study the neural code of vision, which I believe will help inform our approach to deliver electrical stimulation to blind patients to create visual images. Clinical Research My clinical research has focused primarily on the study of optic neuritis/multiple sclerosis, ischemic optic neuro ...
... platform to study the neural code of vision, which I believe will help inform our approach to deliver electrical stimulation to blind patients to create visual images. Clinical Research My clinical research has focused primarily on the study of optic neuritis/multiple sclerosis, ischemic optic neuro ...
Optics of the eye and its impact in vision: a tutorial
... and the retina, where the light is absorbed by the photoreceptors after image formation. The eye moves due to the action of six external muscles, permitting fixation and scanning of the visual environment. The light reaching the eye is first refracted by the cornea, a thin transparent layer free of ...
... and the retina, where the light is absorbed by the photoreceptors after image formation. The eye moves due to the action of six external muscles, permitting fixation and scanning of the visual environment. The light reaching the eye is first refracted by the cornea, a thin transparent layer free of ...
A Review of the Vascular Anatomy of the Optic Nerve Head
... global symptoms of the disease, although 20% of cases of AION are due to an occult variety of GCA where there are no systemic symptoms [3]. ESR and CRP may be elevated in arteritic AION, the latter being more sensitive in diagnosis and management of GCA. Visual loss in arteritic AION is massive in 5 ...
... global symptoms of the disease, although 20% of cases of AION are due to an occult variety of GCA where there are no systemic symptoms [3]. ESR and CRP may be elevated in arteritic AION, the latter being more sensitive in diagnosis and management of GCA. Visual loss in arteritic AION is massive in 5 ...
A Review of the Vascular Anatomy of the Optic Nerve Head
... visual deterioration, worse when waking in the morning. Their visual acuity may be normal or reduced, and perimetry is the most important functional test. It shows relative or absolute defects over the visual field, the most common is a inferior nasal sectorial defect, next is an inferior altitudina ...
... visual deterioration, worse when waking in the morning. Their visual acuity may be normal or reduced, and perimetry is the most important functional test. It shows relative or absolute defects over the visual field, the most common is a inferior nasal sectorial defect, next is an inferior altitudina ...
Grand Rounds - University of Louisville Ophthalmology
... Sumich P, Mitchell P, Wang JJ. Choroidal nevi in a white population: the Blue Mountains Eye Study. Arch Ophthalmol. 1998 May;116(5):645-50. PubMed PMID: 9596501 Naumann GOHHellner KNaumann LR Pigmented nevi of the choroid: clinical study of secondary changes in the overlying tissues. Trans Am Acad O ...
... Sumich P, Mitchell P, Wang JJ. Choroidal nevi in a white population: the Blue Mountains Eye Study. Arch Ophthalmol. 1998 May;116(5):645-50. PubMed PMID: 9596501 Naumann GOHHellner KNaumann LR Pigmented nevi of the choroid: clinical study of secondary changes in the overlying tissues. Trans Am Acad O ...
Longitudinal Changes in Visual Acuity in Keratoconus
... CONCLUSIONS. CLEK Study subjects with keratoconus exhibited a slow but clear decrease in BCVA during follow-up, with low-contrast acuity deteriorating more rapidly than high-contrast. Better baseline BCVA, steeper FDACL, and fundus abnormalities were predictive of greater acuity loss with time. (Inv ...
... CONCLUSIONS. CLEK Study subjects with keratoconus exhibited a slow but clear decrease in BCVA during follow-up, with low-contrast acuity deteriorating more rapidly than high-contrast. Better baseline BCVA, steeper FDACL, and fundus abnormalities were predictive of greater acuity loss with time. (Inv ...
Albinism
... to see albinism is a complex disease that sometimes is not as easily detected. • Absence of color in the hair, skin or iris of the eye and or crossed eyes are all symtoms on the disease. ...
... to see albinism is a complex disease that sometimes is not as easily detected. • Absence of color in the hair, skin or iris of the eye and or crossed eyes are all symtoms on the disease. ...
Contents - Saudi Ophthalmological Society
... contributes to the professional development and competency of our Technical and Support Staff. In the area of Research, KKESH has taken large strides and gained increasing visibility as an elite research center that is recognized globally. Intramural research efforts have been expanded and so have o ...
... contributes to the professional development and competency of our Technical and Support Staff. In the area of Research, KKESH has taken large strides and gained increasing visibility as an elite research center that is recognized globally. Intramural research efforts have been expanded and so have o ...
DETA Review of Disability Criteria for Vision Impairment Report
... 1. visual acuity functions (sensing form and contour, both binocular and monocular, for both distance and near; 2. visual field functions (relating to the entire area that can be seen with fixation of gaze); 3. quality of vision (involving light sensitivity, colour vision, contrast sensitivity and t ...
... 1. visual acuity functions (sensing form and contour, both binocular and monocular, for both distance and near; 2. visual field functions (relating to the entire area that can be seen with fixation of gaze); 3. quality of vision (involving light sensitivity, colour vision, contrast sensitivity and t ...
optic disc abnormalities – diagnosis, evolution and influence on
... disc. The condition is caused by an occlusion defect in the embryonic ventral fissure of the optic nerve (, ). Over one-half are positioned temporally on the nerve head, while about one-third are located more centrally on the disc( ,). Optic pits range in size from , to , disc diameters alon ...
... disc. The condition is caused by an occlusion defect in the embryonic ventral fissure of the optic nerve (, ). Over one-half are positioned temporally on the nerve head, while about one-third are located more centrally on the disc( ,). Optic pits range in size from , to , disc diameters alon ...
Primary optic nerve meningioma - British Journal of Ophthalmology
... central nervous system. Henderson8 has reported 9 adults with survival up to 19 years after the initial diagnosis was made. Two patients not included in our series have been treated conservatively without biopsy because the patients were elderly and there was little proptosis. One has shown no chang ...
... central nervous system. Henderson8 has reported 9 adults with survival up to 19 years after the initial diagnosis was made. Two patients not included in our series have been treated conservatively without biopsy because the patients were elderly and there was little proptosis. One has shown no chang ...
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).