Definitions for macular degeneration
This page provides all possible meanings and translations of the word macular degeneration
Random House Webster's College Dictionary
degeneration of the macula in the center of the retina, resulting in a loss of central vision but not affecting peripheral vision.
eye disease caused by degeneration of the cells of the macula lutea and results in blurred vision; can cause blindness
A disease of the retina of the eye resulting in loss of central vision.
Age-related macular degeneration is a medical condition which usually affects older adults and results in a loss of vision in the center of the visual field because of damage to the retina. It occurs in "dry" and "wet" forms. It is a major cause of blindness and visual impairment in older adults. Macular degeneration can make it difficult or impossible to read or recognize faces, although enough peripheral vision remains to allow other activities of daily life. Starting from the inside of the eye and going towards the outer surface, the three main layers at the back of the eye are the retina, which is light-sensitive tissue that is considered part of the central nervous system and is actually brain tissue; the choroid, which contains the blood supply; and the sclera, which is the white, outer, layer of the eye. The macula is the central area of the retina, which provides the most detailed central vision. In the dry form, cellular debris called drusen accumulates between the retina and the choroid, and the retina can become detached. In the wet form, which is more severe, blood vessels grow up from the choroid behind the retina, and the retina can also become detached. It can be treated with laser coagulation, and with medication that stops and sometimes reverses the growth of blood vessels.
U.S. National Library of Medicine
Degenerative changes in the RETINA usually of older adults which results in a loss of vision in the center of the visual field (the MACULA LUTEA) because of damage to the retina. It occurs in dry and wet forms.
Find a translation for the macular degeneration definition in other languages:
Select another language:
Use the citation below to add this definition to your bibliography:
"macular degeneration." Definitions.net. STANDS4 LLC, 2013. Web. 11 Dec. 2013. <http://www.definitions.net/definition/macular degeneration>.