Ask Dr. Lisa

Q: My contact lenses last a few days instead of two weeks. Any ideas?

A: There are several possible explanations, but the most likely culprit is an increase in protein deposits on the surface of your contacts, says Susan Resnick, O.D., of New York City. Such accumulations can irritate the lining of your eyelids. Switching to daily disposables often solves the problem. But beware: Uncomfortable lenses can also be a warning sign of more serious problems, such as an allergic reaction that may need to be treated with prescription eyedrops. To be safe, you should check out any discomfort with your eye doctor.

Lisa Callahan, M.D., is the author of The Fitness Factor (The Lyons Press). Send your questions to drlisa@self.com.