Ophthalmology and Vision Science
... for keratoconus in Ghana [10-12]. This study determines the profile of keratoconus in selected eye clinics in the Greater Accra Region of Ghana - the demographic profile, presenting visual symptoms and the management and functional outcomes of keratoconus patients. To the authors’ best knowledge, th ...
... for keratoconus in Ghana [10-12]. This study determines the profile of keratoconus in selected eye clinics in the Greater Accra Region of Ghana - the demographic profile, presenting visual symptoms and the management and functional outcomes of keratoconus patients. To the authors’ best knowledge, th ...
Current Treatments in Diabetic Macular Edema
... decrease in vision is also a symptom of DME, and can be caused by acute changes in blood sugars. A sudden increase in floaters in a patient may be a sign of vitreous hemorrhage in a patient with proliferative diabetic retinopathy. Over time, areas of neovascularization that fibrose and regress, may ...
... decrease in vision is also a symptom of DME, and can be caused by acute changes in blood sugars. A sudden increase in floaters in a patient may be a sign of vitreous hemorrhage in a patient with proliferative diabetic retinopathy. Over time, areas of neovascularization that fibrose and regress, may ...
Retinal evaluation efficacy of a scanning laser ophthalmoscope
... periphery and central pole in one image has meant that the doctors at the White Rock Optometry Clinic can in most cases discover what pathologies may be present and to make decisions regarding additional testing to assess ocular health at the start of the exam. This, allied with the ability to perfo ...
... periphery and central pole in one image has meant that the doctors at the White Rock Optometry Clinic can in most cases discover what pathologies may be present and to make decisions regarding additional testing to assess ocular health at the start of the exam. This, allied with the ability to perfo ...
Choroidal Thickness Study Using Swept
... change in optical coherence tomography (OCT) techniques as we moved from time-domain to spectral-domain (SD) OCT. Many of us in the retina subspecialty, however, believed that these advances were only the tip of iceberg and that continued improvements in OCT would allow us to see even further into t ...
... change in optical coherence tomography (OCT) techniques as we moved from time-domain to spectral-domain (SD) OCT. Many of us in the retina subspecialty, however, believed that these advances were only the tip of iceberg and that continued improvements in OCT would allow us to see even further into t ...
Choroidal Thickness Study Using Swept-source
... change in optical coherence tomography (OCT) techniques as we moved from time-domain to spectral-domain (SD) OCT. Many of us in the retina subspecialty, however, believed that these advances were only the tip of iceberg and that continued improvements in OCT would allow us to see even further into t ...
... change in optical coherence tomography (OCT) techniques as we moved from time-domain to spectral-domain (SD) OCT. Many of us in the retina subspecialty, however, believed that these advances were only the tip of iceberg and that continued improvements in OCT would allow us to see even further into t ...
Ocular Application of Nerve Growth Factor Protects
... cells (RGCs) leads to optic nerve (ON) degeneration and vision loss. However, although the elevated intraocular pressure (EIOP) is considered a primary cause of the visual deficit, it is known that some patients still experience visual loss after lowering the IOP and others with GL and ON degeneratio ...
... cells (RGCs) leads to optic nerve (ON) degeneration and vision loss. However, although the elevated intraocular pressure (EIOP) is considered a primary cause of the visual deficit, it is known that some patients still experience visual loss after lowering the IOP and others with GL and ON degeneratio ...
retinal vessel analyzer (rva) - design and function
... Fig. 1 RVA Principle Setup RVA - Design An essential part of the RVA is the fundus camera (FF450, Zeiss Jena, Germany). This optical instrument enables the examination of the background area of the eye. It incorporates two optical pathways, the illumination pathway and the observation pathway. Both ...
... Fig. 1 RVA Principle Setup RVA - Design An essential part of the RVA is the fundus camera (FF450, Zeiss Jena, Germany). This optical instrument enables the examination of the background area of the eye. It incorporates two optical pathways, the illumination pathway and the observation pathway. Both ...
Degenerative changes in cornea
... associated with familial or non familial dyslipoprotaneamia,it is most frequently bilateral ,unilateral condition is rare and my occur in association with carotid disease and ocular hypotony ...
... associated with familial or non familial dyslipoprotaneamia,it is most frequently bilateral ,unilateral condition is rare and my occur in association with carotid disease and ocular hypotony ...
Macular Buckle for Retinal detachment Related to
... and off, allowing the correct placement of the platform via transillumination. The AJL macular buckle is made of silicone-coated PMMA, which makes it rigid and does not allow bending. It has a groove in the indenting platform to insert an optical fiber (Figures 2C and 2D). The explant is inserted in ...
... and off, allowing the correct placement of the platform via transillumination. The AJL macular buckle is made of silicone-coated PMMA, which makes it rigid and does not allow bending. It has a groove in the indenting platform to insert an optical fiber (Figures 2C and 2D). The explant is inserted in ...
teller acuity cards
... We used the Teller Acuity Cards to assess visual acuity in children with severe neurological handicaps (N=12), all of whom had been previously untestable. With every child we were able to obtain at lease on estimate of visual acuity, even with those described as likely having little or no visual fun ...
... We used the Teller Acuity Cards to assess visual acuity in children with severe neurological handicaps (N=12), all of whom had been previously untestable. With every child we were able to obtain at lease on estimate of visual acuity, even with those described as likely having little or no visual fun ...
Retinal damage by light in rats
... testing over a period of 3 to 4 weeks provided the first test followed exposure after at least 24 hours. The variations in response, therefore, relate to variations in the retinal effectiveness of light. Because ERG reduction was persistent, the effect of the 24 hour exposure to light appeared to be ...
... testing over a period of 3 to 4 weeks provided the first test followed exposure after at least 24 hours. The variations in response, therefore, relate to variations in the retinal effectiveness of light. Because ERG reduction was persistent, the effect of the 24 hour exposure to light appeared to be ...
Introduction to retinal straylight
... We know that disturbances to the eye media may cause vision loss of small detail. This can be determined with visual acuity assessment using a letter chart. But eye media disturbance can do much more harm, because it may cause light scattering, resulting in a veil of straylight over the retinal imag ...
... We know that disturbances to the eye media may cause vision loss of small detail. This can be determined with visual acuity assessment using a letter chart. But eye media disturbance can do much more harm, because it may cause light scattering, resulting in a veil of straylight over the retinal imag ...
Care of the Patient with Visual Impairment
... Visual impairment is defined as a functional limitation of the eye(s) or visual system1 and can manifest as reduced visual acuity or contrast sensitivity, visual field loss, photophobia, diplopia, visual distortion, visual perceptual difficulties, or any combination of the above. These functional li ...
... Visual impairment is defined as a functional limitation of the eye(s) or visual system1 and can manifest as reduced visual acuity or contrast sensitivity, visual field loss, photophobia, diplopia, visual distortion, visual perceptual difficulties, or any combination of the above. These functional li ...
... to dissipate thus consolidating the neural architecture established through early visual experience. However, a collection of studies have shown that individuals, at an age beyond what would be considered outside the critical period(s) of visual development, can show visual improvements with occlusi ...
Unchanging visions: the effects and limitations of ocular stillness
... of the visual pathway [8,24,25] (see [5] for a review). Microsaccade occurrence is moreover associated with increased target visibility and various other perceptual effects [19,26 –33]. In addition, microsaccades appear to contribute critically to information extraction during visual scanning [11] a ...
... of the visual pathway [8,24,25] (see [5] for a review). Microsaccade occurrence is moreover associated with increased target visibility and various other perceptual effects [19,26 –33]. In addition, microsaccades appear to contribute critically to information extraction during visual scanning [11] a ...
Style B 24 by 48 wide - Loyola University Chicago
... in all patients with keratoconus and cataract extraction may lead to corneal decompensation in Fuch’s. Several of the previously reported combined cases were treated with penetrating keratoplasty4,5. Here we report 4 eyes (2 patients) with concurrent bilateral Fuch’s and keratoconus. One eye underwe ...
... in all patients with keratoconus and cataract extraction may lead to corneal decompensation in Fuch’s. Several of the previously reported combined cases were treated with penetrating keratoplasty4,5. Here we report 4 eyes (2 patients) with concurrent bilateral Fuch’s and keratoconus. One eye underwe ...
Your guide to age-related macular degeneration
... assessed to see if more are required. The injections are not as bad as they might sound. The patient’s eye is anaesthetised and the needle goes into the corner of the eye so the patient does not see it. Some people do not respond to the injections and may be offered a form of laser treatment instead ...
... assessed to see if more are required. The injections are not as bad as they might sound. The patient’s eye is anaesthetised and the needle goes into the corner of the eye so the patient does not see it. Some people do not respond to the injections and may be offered a form of laser treatment instead ...
Universitat Autònoma de Barcelona D B
... long-term evaluation of new therapeutic approaches. The second part of this work was dedicated to the study of the efficacy of a gene therapy approach aimed at counteracting neovascularization and neurodegeneration. Adenoassociated (AAV) vectors of serotype 2 were chosen to overexpress Pigmented Epi ...
... long-term evaluation of new therapeutic approaches. The second part of this work was dedicated to the study of the efficacy of a gene therapy approach aimed at counteracting neovascularization and neurodegeneration. Adenoassociated (AAV) vectors of serotype 2 were chosen to overexpress Pigmented Epi ...
Print Resource Guide - (VIS) Group of Cumberland County
... back of the capsule or elastic covering of the lens and is common in people with significant Myopia, Diabetics who have high Myopia, adults with Retinitis Pigmentosa, and in people taking Cortisone medication. This type of cataract can cause glare sensitivity and blur. In the early stages, only a do ...
... back of the capsule or elastic covering of the lens and is common in people with significant Myopia, Diabetics who have high Myopia, adults with Retinitis Pigmentosa, and in people taking Cortisone medication. This type of cataract can cause glare sensitivity and blur. In the early stages, only a do ...
Cataract Confusion Clarified
... liquefaction of protein occurs and the capsule becomes wrinkled. Leakage of lens protein often results in lens-induced uveitis. *Treatment of cataracts Various medical treatments have been investigated for dissolving cataracts but none of these has been effective. Surgical removal remains the only m ...
... liquefaction of protein occurs and the capsule becomes wrinkled. Leakage of lens protein often results in lens-induced uveitis. *Treatment of cataracts Various medical treatments have been investigated for dissolving cataracts but none of these has been effective. Surgical removal remains the only m ...
Intra-arterial Chemotherapy for Retinoblastoma
... with temporary dysmotility (n=12). These findings resolved within 6 months in all cases. Following therapy, vascular findings included ophthalmic artery stenosis (permanent in 3 cases, temporary in 1 case), confirmed on fluoroscopy in 3 cases. Concomitant central or branch retinal artery occlusion w ...
... with temporary dysmotility (n=12). These findings resolved within 6 months in all cases. Following therapy, vascular findings included ophthalmic artery stenosis (permanent in 3 cases, temporary in 1 case), confirmed on fluoroscopy in 3 cases. Concomitant central or branch retinal artery occlusion w ...
Nedivi Laboratory at MIT – Neuroscience Research at MIT
... dendritic and axonal arbors and the maturation of their synapses. These properties make it an attractive candidate for participating in plasticity of the mammalian visual system. Here we compare cpg15 expression during normal development of the rat visual system with that seen in response to dark re ...
... dendritic and axonal arbors and the maturation of their synapses. These properties make it an attractive candidate for participating in plasticity of the mammalian visual system. Here we compare cpg15 expression during normal development of the rat visual system with that seen in response to dark re ...
Telemedicine and screening around the world
... were considered pathological and 0,57% (152) of cases were not assessable. From a total of 6523 patients who were referred, were urgently 7,28%, 11,74% did preferentially (within 2-3 weeks) and -80,98% did in the ordinary way. Signs of age-related maculopathy represented the most frequent pathology ...
... were considered pathological and 0,57% (152) of cases were not assessable. From a total of 6523 patients who were referred, were urgently 7,28%, 11,74% did preferentially (within 2-3 weeks) and -80,98% did in the ordinary way. Signs of age-related maculopathy represented the most frequent pathology ...
Light-emitting diodes (LED) for domestic lighting: Any
... 2.1. Some physics and optics Light is an electromagnetic radiation visible by the intact adult human eye in the range of 380e780 nm, spanning from violet to red light. Like all radiations, light carries energy, the shorter wavelengths being the most energetic ones. Radiometric quantities define energ ...
... 2.1. Some physics and optics Light is an electromagnetic radiation visible by the intact adult human eye in the range of 380e780 nm, spanning from violet to red light. Like all radiations, light carries energy, the shorter wavelengths being the most energetic ones. Radiometric quantities define energ ...
Transvitreal Subretinal Injection
... • Minimal focal fibrosis of the sclera (entry site of dosing needle and other ports) ...
... • Minimal focal fibrosis of the sclera (entry site of dosing needle and other ports) ...
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).