Common eye problems

Few 40-year-olds' to-do lists include "Be proactive about not going blind," so you might have to play catch-up. Age 40 really is the time to start protecting your eyes against serious diseases such as glaucoma and macular degeneration, neither of which has symptoms in the early stages. (That's in contrast to the loss of close-focus vision that forces 45-year-olds into bifocals but doesn't threaten blindness.) "Patients may go to the drugstore and get these over-the-counter reading glasses and think, 'Hey, I've fixed my eyes,' " says Andrew Iwach, an ophthalmologist who is executive director of the Glaucoma Center of San Francisco. "Yet they may be unaware that they can be silently losing vision."

Nancy Shute

August 25, 2009