How do I cure double vision in one eye?

Seeing double, or a superimposed "ghost image" of an object through one eye is called Monocular Diplopia. The most common cause is a developing cataract.

This "ghost image" is caused by a different focusing ("refractive") power of the different layers of the natural human crystalline lens. Rather than being solid as you might think any lens would be, the human natural lens is built like an onion, in layers, growing outwards like the growth rings of a tree. If the central part of the lens focuses a little differently than the next layer due to cataract, you will see double out of one eye.

When (and if) the monocular diplopia becomes bad enough, you may need to have a cataract/lens implant procedure.

_Written by J. Trevor Woodhams, M.D. - Chief of Surgery, Woodhams Eye Clinic