epiretinal


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retina

 [ret´ĭ-nah]
the innermost of the three tunics of the eye, surrounding the vitreous body and continuous posteriorly with the optic nerve. The retina is composed of light-sensitive neurons arranged in three layers; the first layer is made up of rods and cones and the other two transmit impulses from the rods and cones to the optic nerve. The rods are sensitive in dim light, and the cones are sensitive in bright light and are responsible for color vision.
Disorders of the Retina. retinopathies are pathologic conditions of the retina; they occur in conjunction with certain systemic disorders, such as hypertension, nephritis, toxemia of pregnancy, and diabetes mellitus.
detachment of the retina is complete or partial separation of the retina from the choroid, the middle coat of the eyeball. It occurs most often in persons with myopia (nearsightedness), but it also can result from trauma to the head.
Structure of the retina showing the rods and cones. From Applegate, 2000.

epiretinal

/epi·ret·i·nal/ (ep″ĭ-ret´ĭ-nal) overlying the retina.

epiretinal

[ep′iret′inal]
overlying the retina.

epiretinal

(ĕ″pĭ-rĕt′ĭn-ĭl) [Gr. on, over, + L. rete, net]
On the surface of the retina.
References in periodicals archive ?
Furthermore, there were complications such as macular scar and the epiretinal membrane that compromised visual prognosis.
Epiretinal membrane or ERM was identified as a hyperreflective thickening at the level of ILM, causing distortion and flattening of the foveal surface.
B, Nonneoplastic retina expressing VEGFR-2 and epiretinal neovascular membrane with many new vessels (*).
The indications of OCT include posterior segment lesions like the detection of fluid within the retinal layers or under the retina (which may not be visible clinically), (3) macular holes, pseudoholes, epiretinal membranes (ERMs), vitreo-macular adhesion (VMA), vitreomacular traction (VMT), retinoschisis, retinal detachment, diabetic retinopathy (DR), age-related macular degeneration (ARMD), retinal nerve fiber layer thickness (RNFLT), optic disc parameters, as well as assessment and analysis of anterior segment structures like anterior chamber area, volume and iris thickness.
Although postoperatively macula appears clinically reattached, development of cystoid macular oedema, epiretinal membrane or persistent submacular fluid (SMF) may affect the visual recovery and all of those changes can be visualized by OCT [8-10].
The initial investigation, led by the Los Angeles County Department of Public Health, determined that in all cases patients had undergone vitrectomy with epiretinal membrane peeling using a dye called Brilliant Blue-G (BBG) from Franck's Compounding Lab, Ocala, Florida.
Other types of retinal implants, called epiretinal implants, sit outside the retina and require the user to wear an external camera and processor unit because they bypass the intact, light-sensitive structures in the eyes.
This condition is also known as epiretinal membrane, cellophane maculopathy, and surface wrinkling maculopathy.
Polymerase chain reaction for detection of Mycobacterium tuberculosis in epiretinal membrane in Eales disease.
Causes of Visual Acuity Deterioration Causes of worsening # of cases ARMD 15 Progression of glaucoma 9 Vein occlusion 8 Diabetic retinopathy 6 Corneal edema 5 Choroidals 4 Epiretinal membrane 3 Ischemic optic neuropathy 2 Cerebrovascular accident 2 Retinal detachment 2 Epithelial Downgrowth 1 Total 57 Table 2.
Two main approaches exist: the epiretinal approach in which the implant is placed on the vitreal side of the retina [6] and the subretinal approach in which the implant replaces degenerated photoreceptors [7-8].
Another project aiming to develop implants that electrically stimulate retinal ganglion cells, the retina's output cells, is the Epiretinal Implant (EPIRET) project, which is funded by the German Ministry of Education and Research.