Article – Double Vision in Myasthenics – Dr. Paul Donohue, Your Good Health

The eyes view objects form a slightly different position. To fuse the images they get into a single picture the six eye muscles of each eye and the three nerves that control them have to align the eyes in exact positions. If one or more muscles or one or more nerves are out of whack, people see two images.

Diabetes, high blood pressure, small strokes, multiple sclerosis and myasthenia gravis are the major causes of double vision. A less-serious cause is a temporary disruption of blood supply to one of the eye nerves or eye muscles. In that instance, the visual disturbances clears in a matter of weeks or months.