World English Dictionary
macular degeneration
pathological changes in the macula lutea, resulting in loss of central vision: a common cause of blindness in the elderly

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

macular degeneration n.
Degeneration of the macula lutea characterized by spots of pigmentation and causing a reduction or loss of central vision.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
macular degeneration   (māk'yə-lər)  Pronunciation Key 
A progressive condition, usually seen in the elderly, characterized by a gradual loss of vision in the central area of the visual field and eventual blindness.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
One has age-related macular degeneration, the main cause of blindness in rich
There are other exciting applications, such as against macular degeneration, a
  disease of the eye.
My dad is blind from wet macular degeneration and diabetic retinopathy, and
  we're eagerly awaiting implants for his condition.
She is suffering from macular degeneration, a type of dystrophy in which
  eyesight simply deteriorates.
Image for macular degeneration
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