To identify an object perfectly, eyes in general move in the same direction and at the same time. The captured signal then reaches the brain stem through several nerves. A damage or lesion in the brainstem can affect the coordination of eyes that in turn results in double vision. Double vision, also called as Diplopia is a medical state in which a single image appears as two images.

Acute illness, cancer, food poisoning, mental trauma, bad sleeping habits and eye strain are some of the causes of Diplopia. Consulting a specialist is the right way to deal with double vision. This medical condition is termed acute because it can lead to several other major problems like radiating headache and paralysis. Person affected by diplopia will not be able to read or write; drive a vehicle, or concentrate. Proper sleep, use of good eyeglasses,  contact eye exercises along with medications can help in treating double vision.