Meaning of senile macular degeneration

se'nile mac'ular degenera'tion

Pronunciation: [key]
— Pathol. Pathol.
  1. a type of macular degeneration that is one of the leading causes of blindness in the elderly and in which tiny blood vessels grow into the macula of the retina, obscuring vision. Abbr.: SMD
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.