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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 ...
- Definition of Retine by The Free Dictionary
(Biochemistry) a chemical found in animal tissues that slows...
- Retinene
Encyclopedia article about retinene by The Free Dictionary
- Retinaldehyde
Retinol oxidized to a terminal aldehyde; a carotene released...
- Retinalite
This information should not be considered complete, up to...
- Retinen
an ocular pigment derived from vitamin A and formed by the...
- Retinas
retina [ret´ĭ-nah] the innermost of the three tunics of the...
- Retinitis Circinata
The following article is from The Great Soviet Encyclopedia...
- Encyclopedia
Encyclopedia article about retine by The Free Dictionary
- Definition of Retine by The Free Dictionary
- Overview
- Symptoms
- Risk Factors
Retinal diseases vary widely, but most of them cause visual symptoms. Retinal diseases can affect any part of your retina, a thin layer of tissue on the inside back wall of the eye. The retina contains millions of light-sensitive cells, called rods and cones, and other nerve cells that receive and organize visual information. The retina sends this ...
Many retinal diseases share some common symptoms. These may include: 1. Seeing floating specks or cobwebs. 2. Blurred or distorted vision in which straight lines can look wavy. 3. Defects in the side vision. 4. Vision loss. You may need to try looking with each eye alone to notice these changes.
Risk factors for retinal diseases might include: 1. Aging. 2. Smoking. 3. Being obese. 4. Having diabetes or other diseases. 5. Eye trauma. 6. A family history of retinal diseases.
Nov 10, 2021 · This can happen when the vitreous detaches as part of the aging process, or it can result from trauma. Retinal tears can cause blurry vision, the sudden onset of floaters, or flashes of light. It ...
The retina is a layer of cells at the back of your eyeball that converts light into nerve signals. It then sends those signals along your optic nerve to your brain. Your brain processes those signals into your sense of vision. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission.
- Diabetic Retinopathy. Diabetic retinopathy affects 1 in 3 people with diabetes. High blood sugar in diabetes impacts blood vessels throughout the body, including the small ones that feed the retina.
- Retinal Tear. A retinal tear is what it sounds like—a rip or hole in the retina. It can occur when something attached to the retina tugs too hard. This can happen when there's a common posterior vitreous detachment.
- Retinal Detachment. A retinal detachment is when the retina pulls away from the tissues that nourish it. Without the needed blood supply, the retina no longer works as it should.
- Macular Degeneration. With age-related macular degeneration, fine central vision (what you see at the center of your visual field) is generally lost over time, but peripheral vision (what you see at the sides of your visual field) is maintained.
The earliest known use of the noun retinue is in the Middle English period (1150—1500). OED's earliest evidence for retinue is from before 1387, in a translation by John Trevisa, translator. retinue is a borrowing from French. Etymons: French retenu. See etymology.
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RETINUE definition: 1. a group of people who travel with an important person to help them: 2. a group of people who…. Learn more.
