drusen

1. (macular drusen) white or yellow deposits of hyalin in Bruch's membrane of the choroid. They are often associated with macular degeneration . 2. (disc drusen) glistening nodules seen on an irregularly raised optic disc . Consisting of excess glia (produced congenitally) that has undergone degeneration and calcification, they can be confused with papilloedema .