Aqueous Humor
... Maintains the intraocular pressure and inflates the globe of the eye. Provides nutrition for the avascular ocular tissues; posterior cornea, trabecular meshwork, lens, and anterior vitreous. Carries away waste products from metabolism of the above avascular ocular tissues. May serve to transport asc ...
... Maintains the intraocular pressure and inflates the globe of the eye. Provides nutrition for the avascular ocular tissues; posterior cornea, trabecular meshwork, lens, and anterior vitreous. Carries away waste products from metabolism of the above avascular ocular tissues. May serve to transport asc ...
Say True or False and Explain :
... 3. True - (Everyone over age 60 is at an increased risk for glaucoma). 4. True - (People with glaucoma usually do not experience pain from the disease). 5. True - (Although glaucoma cannot be cured, one can generally control it with eye drops or pills or with laser surgery). 6. False - (Increase ...
... 3. True - (Everyone over age 60 is at an increased risk for glaucoma). 4. True - (People with glaucoma usually do not experience pain from the disease). 5. True - (Although glaucoma cannot be cured, one can generally control it with eye drops or pills or with laser surgery). 6. False - (Increase ...
Head trauma with contralateral traumatic optic neuropathy
... of the left foramen ovale and foramen spinosum. ...
... of the left foramen ovale and foramen spinosum. ...
Blue laser autofluorescence
... be highly effective in the diagnosis of wet AMD. In order to understand why this is so, one must first understand the nature of the disease process. Wet AMD is characterised by choroidal neocascularisation (CNV), which develops between Bruch’s membrane, RPE and the photoreceptor layer. In studies, i ...
... be highly effective in the diagnosis of wet AMD. In order to understand why this is so, one must first understand the nature of the disease process. Wet AMD is characterised by choroidal neocascularisation (CNV), which develops between Bruch’s membrane, RPE and the photoreceptor layer. In studies, i ...
Evaluation and Management of Sus
... Retinal detachment often is a preventable cause of vision loss. There are three types of retinal detachments: exudative, tractional, and rhegmatogenous. The most common type is rhegmatogenous, which results from retinal breaks caused by vitreoretinal traction. Risk factors for retinal detachment inc ...
... Retinal detachment often is a preventable cause of vision loss. There are three types of retinal detachments: exudative, tractional, and rhegmatogenous. The most common type is rhegmatogenous, which results from retinal breaks caused by vitreoretinal traction. Risk factors for retinal detachment inc ...
The Ophthalmic Examination
... reflex blink is the end point. Therefore, the seventh cranial nerve and orbicularis oculi muscle must also be intact along with visual pathways up to and including the cortex. When performing this test the examiner should stand on one side of the animal to assure that his hand motion is not in the v ...
... reflex blink is the end point. Therefore, the seventh cranial nerve and orbicularis oculi muscle must also be intact along with visual pathways up to and including the cortex. When performing this test the examiner should stand on one side of the animal to assure that his hand motion is not in the v ...
Eye Floaters
... As mentioned above, the vitreous can be vacuumed away and replaced with nice, clean salt water. This does involve poking a sharp stick into your eye - actually three - and so the risks are greater. It was developed, and is the right choice, for people who have really major clouding of vision from se ...
... As mentioned above, the vitreous can be vacuumed away and replaced with nice, clean salt water. This does involve poking a sharp stick into your eye - actually three - and so the risks are greater. It was developed, and is the right choice, for people who have really major clouding of vision from se ...
From the optic tectum to the primary visual cortex
... visual locations suppress each other so that the response to the winner location is higher than the responses to the other locations [7,13,14,15,16,17,18]. Along with orienting to the attended location (e.g., by directing a saccade), the outcome of WTA can impact visual analysis in at least ...
... visual locations suppress each other so that the response to the winner location is higher than the responses to the other locations [7,13,14,15,16,17,18]. Along with orienting to the attended location (e.g., by directing a saccade), the outcome of WTA can impact visual analysis in at least ...
Investigations in Ophthalmology
... mission—patient care, education, and research—but it’s the research, in particular, that strengthens the treatments and training so crucial to the ophthalmic enterprise. “So much of what we have to offer our patients, as well as our residents, is the result of the dedication and creativity of basic- ...
... mission—patient care, education, and research—but it’s the research, in particular, that strengthens the treatments and training so crucial to the ophthalmic enterprise. “So much of what we have to offer our patients, as well as our residents, is the result of the dedication and creativity of basic- ...
Precise long non-coding RNA modulation in visual maintenance
... lncRNAs referring to gene ontology (GO), biological process annotations and genomic adjacency. The functions of lncRNAs mainly involve organ or tissue development, especially eye and neuron development.2–4 This research leads us to focus on the importance of lncRNAs in normal eye development, the fo ...
... lncRNAs referring to gene ontology (GO), biological process annotations and genomic adjacency. The functions of lncRNAs mainly involve organ or tissue development, especially eye and neuron development.2–4 This research leads us to focus on the importance of lncRNAs in normal eye development, the fo ...
Heidelberg Engineering develops new gold standard for
... Glaucoma.” To add value to the HRT, the company has introduced modules to detect retinal diseases and examine the cornea over the years.“We have really fulfilled a wish of all MDs – an instrument that can do more than one thing – retina, glaucoma, and cornea,” Dr Müller notes.“It is a very good retu ...
... Glaucoma.” To add value to the HRT, the company has introduced modules to detect retinal diseases and examine the cornea over the years.“We have really fulfilled a wish of all MDs – an instrument that can do more than one thing – retina, glaucoma, and cornea,” Dr Müller notes.“It is a very good retu ...
Biology and therapy of inherited retinal degenerative disease
... novel therapeutic interventions for blinding retinal diseases. Retina structure and function ...
... novel therapeutic interventions for blinding retinal diseases. Retina structure and function ...
Path Chapter 29 p1346-1357 [4-20
... o A very pigmented congenital nevus under the uvea, can make the sclera look blue, called congenital melanosis oculi When there’s also skin pigmentation around the eye, it’s called nevus of Ota ...
... o A very pigmented congenital nevus under the uvea, can make the sclera look blue, called congenital melanosis oculi When there’s also skin pigmentation around the eye, it’s called nevus of Ota ...
Protective coatings for intraocular wirelessly controlled microrobots
... Manassas, VA), harvested from subconfluent monolayers, were incubated in 25 cm2 culture flasks at 37°C and 5% CO2. The growth medium (DMEM) included 10% heat-inactivated fetal bovine serum (Invitrogen 10270) and 1% Penicillin/Streptomycin. NIH3T3 fibroblast proliferation was characterized by the mit ...
... Manassas, VA), harvested from subconfluent monolayers, were incubated in 25 cm2 culture flasks at 37°C and 5% CO2. The growth medium (DMEM) included 10% heat-inactivated fetal bovine serum (Invitrogen 10270) and 1% Penicillin/Streptomycin. NIH3T3 fibroblast proliferation was characterized by the mit ...
Differential expression of the catalytic subunits for PP-1 and PP
... serine/threonine phosphatases-1 (PP-1) and 2A (PP-2A) account for 90% of serine/threonine phosphatase activity in eukaryote cells and play distinct roles in regulating multiple cellular processes and activities. Our previous studies have established the expression patterns of the catalytic subunits ...
... serine/threonine phosphatases-1 (PP-1) and 2A (PP-2A) account for 90% of serine/threonine phosphatase activity in eukaryote cells and play distinct roles in regulating multiple cellular processes and activities. Our previous studies have established the expression patterns of the catalytic subunits ...
Central retinal vein occlusion concomitant with dengue fever
... Background: Dengue virus infection is on the rise and there is increasing number of ocular complications that are being reported. Most common ocular complications are macular edema, macular hemorrhages, and foveolitis. There are case reports on branch retinal vessel occlusions. Most of the ocular c ...
... Background: Dengue virus infection is on the rise and there is increasing number of ocular complications that are being reported. Most common ocular complications are macular edema, macular hemorrhages, and foveolitis. There are case reports on branch retinal vessel occlusions. Most of the ocular c ...
as a PDF
... Rats were anesthetized and their pupils were dilated by local application of tropicamide in order to examine the retinal vasculature and verify proper eye perfusion before sacrifice. The cornea was gently applanated with a glass slide to visualize the retina, and the vasculature and optic nerve head ...
... Rats were anesthetized and their pupils were dilated by local application of tropicamide in order to examine the retinal vasculature and verify proper eye perfusion before sacrifice. The cornea was gently applanated with a glass slide to visualize the retina, and the vasculature and optic nerve head ...
Chapter 3 Registration of retinographies
... pairs or sequential temporal series of the same eye, in order to study the optic disk for signs of an illness progression. Martı́nez-Costa [65], for instance, seeks high increments in grey level at the foveal centre in a series of temporal images to detect macular leakage due to retinal vein obstruc ...
... pairs or sequential temporal series of the same eye, in order to study the optic disk for signs of an illness progression. Martı́nez-Costa [65], for instance, seeks high increments in grey level at the foveal centre in a series of temporal images to detect macular leakage due to retinal vein obstruc ...
OPTOMETRY
... eye may be sub-clinically affected. This could not be investigated in our case as the contrast sensitivity of the fellow eye was decreased due to amblyopia. Although fundus examination is the best method for diagnosing and monitorClinical and Experimental Optometry 90.4 July 2007 ...
... eye may be sub-clinically affected. This could not be investigated in our case as the contrast sensitivity of the fellow eye was decreased due to amblyopia. Although fundus examination is the best method for diagnosing and monitorClinical and Experimental Optometry 90.4 July 2007 ...
1 Identifying core biological processes distinguishing human eye
... bioRxiv preprint first posted online May. 11, 2017; doi: http://dx.doi.org/10.1101/136960. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. It is made available under a CC-BY 4.0 International license. ...
... bioRxiv preprint first posted online May. 11, 2017; doi: http://dx.doi.org/10.1101/136960. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. It is made available under a CC-BY 4.0 International license. ...
Session 7: Neoplastic & Autoimmune CNS Disorders
... Function: to keep the fovea on a small moving target, e.g. tracking a tennis ball. As in saccades, pointing the fovea at this moving ball is a 2D problem. 3) Vestibular ocular reflex/ Oculovestibular reflex Function: to keep the image of the world stationary on the retina when the head rotates. Try ...
... Function: to keep the fovea on a small moving target, e.g. tracking a tennis ball. As in saccades, pointing the fovea at this moving ball is a 2D problem. 3) Vestibular ocular reflex/ Oculovestibular reflex Function: to keep the image of the world stationary on the retina when the head rotates. Try ...
Light-emitting diodes (LED) for domestic lighting: Any
... divided by the area of the emitting surface). As a consequence, the smaller the emitting surface, the more concentrated the flux in the viewing direction and the higher the luminance. Because the eye has an optical system that images the world on the retina, the photometric quantity that is relevant ...
... divided by the area of the emitting surface). As a consequence, the smaller the emitting surface, the more concentrated the flux in the viewing direction and the higher the luminance. Because the eye has an optical system that images the world on the retina, the photometric quantity that is relevant ...
Guide to Ophthalmic Equipment For non-ophthalmic people
... vision loss leading to blindness. Phacoemulsification is a technique where ultrasonic energy, ranging from about 25 to 80Khz, is used to break up the opaque lens into smaller pieces that are then aspirated out of the eye. After the entire cataract is removed, an intraocular lens (IOL) is inserted in ...
... vision loss leading to blindness. Phacoemulsification is a technique where ultrasonic energy, ranging from about 25 to 80Khz, is used to break up the opaque lens into smaller pieces that are then aspirated out of the eye. After the entire cataract is removed, an intraocular lens (IOL) is inserted in ...
Management of Pseudophakic Retinal Detachment
... Material and Methods: Non comparative interventional case study was conducted at Isra Postgraduate Institute of Ophthalmology, Al-Ibrahim Eye Hospital, Malir Karachi from 1st January to December 2005. Study include 23 pseudophakic eyes of 23 patients with pseudophakic retinal detachment, who underwe ...
... Material and Methods: Non comparative interventional case study was conducted at Isra Postgraduate Institute of Ophthalmology, Al-Ibrahim Eye Hospital, Malir Karachi from 1st January to December 2005. Study include 23 pseudophakic eyes of 23 patients with pseudophakic retinal detachment, who underwe ...
Retina
The retina (/ˈrɛtɪnə/ RET-i-nə, pl. retinae, /ˈrɛtiniː/; from Latin rēte, meaning ""net"") is the third and inner coat of the eye which is a light-sensitive layer of tissue. The optics of the eye create an image of the visual world on the retina (through the cornea and lens), which serves much the same function as the film in a camera. Light striking the retina initiates a cascade of chemical and electrical events that ultimately trigger nerve impulses. These are sent to various visual centres of the brain through the fibres of the optic nerve.In vertebrate embryonic development, the retina and the optic nerve originate as outgrowths of the developing brain, so the retina is considered part of the central nervous system (CNS) and is actually brain tissue. It is the only part of the CNS that can be visualized non-invasively.The retina is a layered structure with several layers of neurons interconnected by synapses. The only neurons that are directly sensitive to light are the photoreceptor cells. These are mainly of two types: the rods and cones. Rods function mainly in dim light and provide black-and-white vision, while cones support daytime vision and the perception of colour. A third, much rarer type of photoreceptor, the intrinsically photosensitive ganglion cell, is important for reflexive responses to bright daylight.Neural signals from the rods and cones undergo processing by other neurons of the retina. The output takes the form of action potentials in retinal ganglion cells whose axons form the optic nerve. Several important features of visual perception can be traced to the retinal encoding and processing of light.