Macular Degeneration is the MCC of blindness in people over 55 years old in the US. The visual defect is central scotoma.
Dry Macular Degeneration-fatty tissue(drusen) between the retina and Bruch's membrane.
Wet Macular Degeneration-abnormal blood vessels grow behind the macula and bleed.
http://www.lowvisionclub.com/articles/seewhatisee.html
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