Double vision can develop due to a variety of ophthalmologic, infectious, autoimmune, neurological or neoplastic factors, which range from minor to life threatening. A major cause of double vision is misalignment of the eyes, which makes the eyes unable to focus equally on an object. Other causes include damage to the third, fourth, or sixth cranial nerves which control eye movements, cancer, trauma, migraine, multiple sclerosis, botulism, brain tumor, bascess, strabismus, lyme disease, anisometropia and drunkenness. Double vision can be temporary when it is caused by alcohol intoxication or head injuries, such as concussion. I suggest you contact your eye doctor as early as possible to have a thorough examination and receive relevant treatment of the underlying cause. In your daily eye, you should do more eye exercises. Or wear an eye patch on alternative eyes to relieve such symptom. In case of serious situation, surgery is necessary. Wish you better soon.
