My one grandmother (recently passed) had macular degeneration and couldn't see from about the time she turned 75. My other grandmother was recently diagnosed (at 91) with macular degeneration....and then proceeded to tell everyone she has had it in one eye since she was 55 years old and never told a soul! 35 years, about 25 of it driving, without telling anyone she couldn't even see out of one eye. So good thing she didn't drive like a grandma .