Age-related macular degeneration (AMD) is the foremost cause of vision loss in the U.S., with millions of Americans showing some sign of the disorder. AMD is uncommon in people younger than 55. If you are over 65, macular degeneration may already affect your central vision -- the vision you need for close work like reading and sewing.
AMD occurs in two forms:
Dry: Most common
Wet: Less common, but requires immediate medical attention to preserve central vision