CHILDREN WITH CORTICAL VISION IMPAIRMENT: IMPLICATIONS
... Vision impairment has traditionally been associated with a problem with the eyes. There are a number of students with disabilities, however, who have vision loss as a result of disturbance to the posterior visual pathways and/or the visual cortex which deal with the processing and integration of vis ...
... Vision impairment has traditionally been associated with a problem with the eyes. There are a number of students with disabilities, however, who have vision loss as a result of disturbance to the posterior visual pathways and/or the visual cortex which deal with the processing and integration of vis ...
Iowa Vision 2013 Spring - Carver College of Medicine
... The environment provides a safe means of collecting safety relevant measures of visual performance such as hazard detection and collision avoidance without placing the subject or staff in danger. Research is not limited to vehicle systems as studies also focus on visual acuity and vision impairment’ ...
... The environment provides a safe means of collecting safety relevant measures of visual performance such as hazard detection and collision avoidance without placing the subject or staff in danger. Research is not limited to vehicle systems as studies also focus on visual acuity and vision impairment’ ...
Ischemic optic neuropathy - California Optometric Association
... NA-AION within 36 hours of taking sildenafil citrate (Viagra); however, authors noted that all subjects also had pre-existing conditions such as hypertension, diabetes, elevated cholesterol or hyperlipidemia.16 It is thought that vasodilation of blood vessels by the drug (Viagra), in combination wit ...
... NA-AION within 36 hours of taking sildenafil citrate (Viagra); however, authors noted that all subjects also had pre-existing conditions such as hypertension, diabetes, elevated cholesterol or hyperlipidemia.16 It is thought that vasodilation of blood vessels by the drug (Viagra), in combination wit ...
Soaring aspirations to cure, to heal, to serve.
... As you will read, Duke Eye Center researchers are advancing against eye disease on all fronts. They are learning to manipulate genes to treat glaucoma, corneal disease, and diseases of the retina. After years of studying cellular processes within the structures of the eye, they are developing new su ...
... As you will read, Duke Eye Center researchers are advancing against eye disease on all fronts. They are learning to manipulate genes to treat glaucoma, corneal disease, and diseases of the retina. After years of studying cellular processes within the structures of the eye, they are developing new su ...
Comparison of static visual acuity between Snellen and Early
... terms of test-retest reliability was fairly small and the time taken to complete the ETDRS is 1.86 times that of the Snellen chart (Falkenstein et al., 2008). Tong et al. (2004) concluded that ETDRS measurement yielded better VA, particularly with vision <20/200. Since Snellen charts are relatively ...
... terms of test-retest reliability was fairly small and the time taken to complete the ETDRS is 1.86 times that of the Snellen chart (Falkenstein et al., 2008). Tong et al. (2004) concluded that ETDRS measurement yielded better VA, particularly with vision <20/200. Since Snellen charts are relatively ...
Visual fields
... where the arcuate defects meet at the median raphe. This is called Roenne’s nasal step, and it is mostly superior nasal step as, Superior field is involve somewhat more frequently. ...
... where the arcuate defects meet at the median raphe. This is called Roenne’s nasal step, and it is mostly superior nasal step as, Superior field is involve somewhat more frequently. ...
Diagnosing and Treating Corneal Dystrophy
... cornea (Figure 6). Guttata form secondary to abnorDisposable lenses revolutionized the treatment and mal functioning endothelial cells and can occur as management of patients who have corneal erosions. the result of aging, trauma or inflammation. A soft contact lens on the eye not only covers the Fu ...
... cornea (Figure 6). Guttata form secondary to abnorDisposable lenses revolutionized the treatment and mal functioning endothelial cells and can occur as management of patients who have corneal erosions. the result of aging, trauma or inflammation. A soft contact lens on the eye not only covers the Fu ...
Low-Vision or Reduced Visual Acuity
... devices, and training for the activities of daily living and for help with work-related tasks. Low-vision clinical staff will recommend and help patients to evaluate various assistive devices before purchase, to prevent the purchase of costly appliances that later prove useless. RVA, as a primary di ...
... devices, and training for the activities of daily living and for help with work-related tasks. Low-vision clinical staff will recommend and help patients to evaluate various assistive devices before purchase, to prevent the purchase of costly appliances that later prove useless. RVA, as a primary di ...
Hypertensive Retinopathy
... between 5 and 15 minutes after beginning of oxygen breathing, when the lung was completely washed out with oxygen. Method of Caliber Measurement Retinal photographs were scrutinized after processing and all those with imperfect focus rejected. Even minor degrees of image blurring are unacceptable in ...
... between 5 and 15 minutes after beginning of oxygen breathing, when the lung was completely washed out with oxygen. Method of Caliber Measurement Retinal photographs were scrutinized after processing and all those with imperfect focus rejected. Even minor degrees of image blurring are unacceptable in ...
methods
... postoperative recovery within 2 weeks was achieved in 80%. Formation of inflammatory membrane over the IOL was noticed in most of cases by the second postoperative day (50%) and resolved by the end of 2 weeks. Elevation of intraocular pressure was encountered in 3 cases and controlled by topical bet ...
... postoperative recovery within 2 weeks was achieved in 80%. Formation of inflammatory membrane over the IOL was noticed in most of cases by the second postoperative day (50%) and resolved by the end of 2 weeks. Elevation of intraocular pressure was encountered in 3 cases and controlled by topical bet ...
Mark J. Mannis, MD
... UC Davis now ranks as one of the largest centers for Vision Research in the United States. In 2012, 45 UC Davis faculty, with nearly $22M in grant support, studied all aspects of visual function, from molecular biology of the cornea, to visual cognition in the brain, from nano-engineering of the tra ...
... UC Davis now ranks as one of the largest centers for Vision Research in the United States. In 2012, 45 UC Davis faculty, with nearly $22M in grant support, studied all aspects of visual function, from molecular biology of the cornea, to visual cognition in the brain, from nano-engineering of the tra ...
Permeability of Ocular Vessels and Transport Across the
... model-short-term, untreated-streptozoto cin-induced diabetes in rats-have also given conflicting results.31-33 Some of the problems involved in these fluorophotometry studies can be avoided by using radioactively labelled tracers instead of fluoroscein for quantitation of BRB permeability. In one s ...
... model-short-term, untreated-streptozoto cin-induced diabetes in rats-have also given conflicting results.31-33 Some of the problems involved in these fluorophotometry studies can be avoided by using radioactively labelled tracers instead of fluoroscein for quantitation of BRB permeability. In one s ...
Original Article DIAGNOSIS OF DIABETIC MACULAR EDEMA (DME
... In their research work, Se W et al 24 found that focal leakage was more than diffuse leakage. We get almost same results in our study. A report forwarded by Nizan Kowska et al25 the incidence of diabetic maculopathy was 81.6%. These results are comparable with our study work. In their research Sures ...
... In their research work, Se W et al 24 found that focal leakage was more than diffuse leakage. We get almost same results in our study. A report forwarded by Nizan Kowska et al25 the incidence of diabetic maculopathy was 81.6%. These results are comparable with our study work. In their research Sures ...
VIEW PDF - Glaucoma Today
... inter-eye comparisons are more valuable due to the identical recording and noise conditions for each eye. Limitations will remain, however, with patients who have underlying strabismus or another disparity in the fixation angle between their eyes. The use of a spatially sparse stimulation21 pattern ...
... inter-eye comparisons are more valuable due to the identical recording and noise conditions for each eye. Limitations will remain, however, with patients who have underlying strabismus or another disparity in the fixation angle between their eyes. The use of a spatially sparse stimulation21 pattern ...
Fluorescein angiography in a horse with optic nerve atrophy
... In this particular case the transmitted fluorescence of the large choroidal vessels due to the fundus albinism made it hard to differentiate the ocular fundus structures. In the literature this is referred to as the ‘choroidal window defect’ in the tapetal zone and ‘retinal window defect’ in the non ...
... In this particular case the transmitted fluorescence of the large choroidal vessels due to the fundus albinism made it hard to differentiate the ocular fundus structures. In the literature this is referred to as the ‘choroidal window defect’ in the tapetal zone and ‘retinal window defect’ in the non ...
1 Visual Function Assessment in Medical Imaging Research Carla
... used population norms as a measure of adequacy and supposed that these norms would apply to medical imaging. This assumption needs to be supported with more research in this field. The mean binocular visual acuity of participants for distance was 20/14. Our findings are comparable with one previous ...
... used population norms as a measure of adequacy and supposed that these norms would apply to medical imaging. This assumption needs to be supported with more research in this field. The mean binocular visual acuity of participants for distance was 20/14. Our findings are comparable with one previous ...
Concept of Visual Acuity
... acuity levels. This difficulty is compounded by the contour interaction or ‘visual crowding' phenomenon – the legibility of an optotype is less clear when presented with other optotypes in close proximity. Contour interaction varies throughout the Snellen chart and the 6/60 and 6/6 visual acuity are ...
... acuity levels. This difficulty is compounded by the contour interaction or ‘visual crowding' phenomenon – the legibility of an optotype is less clear when presented with other optotypes in close proximity. Contour interaction varies throughout the Snellen chart and the 6/60 and 6/6 visual acuity are ...
XV - Mass. Eye and Ear
... Kevin Houston is a Doctor of Optometry and scholar in the Harvard Vision Clinician Scientist Development Program at Mass Eye and Ear. He is recognized by his peers as an expert in brain-injury vision rehabilitation and is frequently asked to lecture both locally and nationally. His area of excellenc ...
... Kevin Houston is a Doctor of Optometry and scholar in the Harvard Vision Clinician Scientist Development Program at Mass Eye and Ear. He is recognized by his peers as an expert in brain-injury vision rehabilitation and is frequently asked to lecture both locally and nationally. His area of excellenc ...
Optical Coherence Tomography in Pediatric Ophthalmology: Current
... et al found cystoid macular edema (CME) in more than half of the neonates with ROP by using handheld SD-OCT.38 Baker et al used OCT to study eyes with ROP that had no significant macular pathology on ophthalmoscopy and demonstrated subclinical changes in foveal anatomy, including relative loss of fov ...
... et al found cystoid macular edema (CME) in more than half of the neonates with ROP by using handheld SD-OCT.38 Baker et al used OCT to study eyes with ROP that had no significant macular pathology on ophthalmoscopy and demonstrated subclinical changes in foveal anatomy, including relative loss of fov ...
Title: Difference in retinal nerve fiber layer thickness between normal
... loss can be observed (Schacknow PN , 2010). Progressive optic neuropathy presents with loss of retinal ganglion cells, resulting in visual field abnormalities. Loss of vision results if it is not detected and managed in the early stages. It has been demonstrated that structural damage to the optic n ...
... loss can be observed (Schacknow PN , 2010). Progressive optic neuropathy presents with loss of retinal ganglion cells, resulting in visual field abnormalities. Loss of vision results if it is not detected and managed in the early stages. It has been demonstrated that structural damage to the optic n ...
Eyes on the Future Ireland 2008: A study into the prevalence of
... Conditions such as glaucoma, cataract and age related macular degeneration (AMD) all cause a reduction or diminution of vision and these become more and more common in older age. In this study we have sought to estimate the likely occurrence of existing (prevalence) or new cases (incidence) of sight ...
... Conditions such as glaucoma, cataract and age related macular degeneration (AMD) all cause a reduction or diminution of vision and these become more and more common in older age. In this study we have sought to estimate the likely occurrence of existing (prevalence) or new cases (incidence) of sight ...
Chapter 11 Eyes Physical Examination Preview Eyes Measure
... Defective vision or blindness in a single eye Visual Fields (Cont.) Visual field defects (Cont.) Bitemporal hemianopia is caused by a lesion, most commonly a pituitary tumor, interrupting optic chiasm. Visual Fields (Cont.) Visual field defects (Cont.) Homonymous hemianopia can be caused by a lesion ...
... Defective vision or blindness in a single eye Visual Fields (Cont.) Visual field defects (Cont.) Bitemporal hemianopia is caused by a lesion, most commonly a pituitary tumor, interrupting optic chiasm. Visual Fields (Cont.) Visual field defects (Cont.) Homonymous hemianopia can be caused by a lesion ...
Optical coherence tomography angiography of the optic nerve head
... densities have been reported to be significantly reduced at the corresponding location of the visual field defects and highly correlate with visual field pattern standard deviation (12,14). Yarmohammadi et al. (16) found that vessel density had similar diagnostic accuracy as nerve fiber layer thickn ...
... densities have been reported to be significantly reduced at the corresponding location of the visual field defects and highly correlate with visual field pattern standard deviation (12,14). Yarmohammadi et al. (16) found that vessel density had similar diagnostic accuracy as nerve fiber layer thickn ...
Sheetal Baldava 1 , M. Gopal Kishan 2
... affecting the posterior segment of the eye can be unilateral or bilateral. If the fetal fissure fails to close posteriorly, then a coloboma affecting the retinal pigment epithelium (RPE), neurosensory retina, or choroid may occur. The defect is essentially a bare sclera with the overlying RPE, retin ...
... affecting the posterior segment of the eye can be unilateral or bilateral. If the fetal fissure fails to close posteriorly, then a coloboma affecting the retinal pigment epithelium (RPE), neurosensory retina, or choroid may occur. The defect is essentially a bare sclera with the overlying RPE, 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).