Double Vision (Diplopia)
What Is It?
Double vision, also called diplopia, causes a person to see two images of a single object. There are two types of double vision: monocular and binocular.
Monocular diplopia is double vision in only one eye. The double vision continues even when the other eye is covered. The doubling does not go away when you look in different directions. Monocular diplopia can be caused by: