- macular degeneration
Ophthalm.degeneration of the central portion of the retina, resulting in a loss of sharp vision.
* * *It is the leading cause of blindness in old age. Probably due to reduced blood circulation, it is now known to have a genetic component. It is twice as common in smokers as in nonsmokers, and it is also correlated with lifelong sun exposure. Peripheral vision usually remains, but loss of central visual acuity makes reading or fine work difficult or impossible, even with special magnifying eyeglasses. Some forms of macular degeneration can be halted (but not reversed) by laser surgery.
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Macular degeneration — Classification and external resources Picture of the fundus showing intermediate age related macular degeneration. ICD 10 … Wikipedia
macular degeneration — n. an eye disorder in which the macula lutea gradually deteriorates, resulting in blurred vision, blind spots, etc … English World dictionary
Macular degeneration — A disease that progressively destroys the macula, the central portion of the retina, impairing central vision. Macular degeneration rarely causes blindness because only the center of vision is affected. However, injury to the macula in the center … Medical dictionary
macular degeneration — noun eye disease caused by degeneration of the cells of the macula lutea and results in blurred vision; can cause blindness • Hypernyms: ↑eye disease, ↑degeneration, ↑devolution • Hyponyms: ↑age related macular degeneration, ↑AMD * * * noun … Useful english dictionary
macular degeneration — a group of conditions affecting the macula lutea of the eye, resulting in a reduction or loss of central vision. Age related macular degeneration (AMD, ARMD) is the most common cause of blindness in the elderly. Two types are commonly recognized … The new mediacal dictionary
macular degeneration — mac′ular degenera′tion n. oph degeneration of the macula in the center of the retina, resulting in a loss of central vision but not affecting peripheral vision … From formal English to slang
macular degeneration — noun Date: 1918 a gradual loss of the central part of the field of vision usually affecting both eyes that occurs especially in the elderly and that in a slowly progressing form is marked especially by accumulation of yellow deposits in and… … New Collegiate Dictionary
macular degeneration — noun A disease of the retina of the eye resulting in loss of central vision … Wiktionary
macular degeneration — /ˌmækjələ dədʒɛnəˈreɪʃən/ (say .makyuhluh duhjenuh rayshuhn) noun Ophthalmology a degenerative disease of the macula (def. 2), causing a progressive loss of central vision … Australian English dictionary
Age-related macular degeneration — A disease with it onset usually after age 60 that progressively destroys the macula, the central portion of the retina, impairing central vision. Age related macular degeneration (AME) rarely causes blindness because only the center of vision is… … Medical dictionary