What should I do about double vision?

Double vision, or diplopia, is a condition when you see two images of a single object. Many people confuse double vision with blurred vision, where there is a single image with a ghost image immediately next to the real one. The first condition must be carefully evaluated for several serious disease conditions, and you should see an ophthalmologist, an eye doctor, the only eye doctor trained in medical school. He or she will perform the necessary tests to determine what the cause of your double vision is, if you need eyeglasses, and what treatments may be appropriate for your case.