Every year I dutifully go see my optometrist to make sure my eyes are healthy, sure, but mostly because I need to renew my contact prescription. If you're one of the 150 million in the United States who also wear glasses or contacts, you're probably the same.
For the rest of the population, the American Optometric Association recommends getting your eyes checked every two years in order to find any potential problems early. Regular checkups can catch vision disorders like glaucoma and macular degeneration early, as well as detect more general health issues like diabetes and high blood pressure. But I know many people with perfect vision who've barely set foot in an optometrist's office. How about you?