Ralph MetsonRalph B. Metson, M.D., is a clinical professor at Harvard Medical School who practices at the Massachusetts Eye and Ear Infirmary. His work has been profiled in the New York Times and Wall Street Journal, and he has appeared on "Good Morning merica." Steven Mardon is a freelance writer specializing in health issues who has written for newsletters, newspapers, and magazines for more than ten years. Read More Read Less