Double vision presents as seeing two images when looking at one object. One of the reasons for double vision may be that the muscles that control the motion of eyeballs get inflammation or trauma or neurological disorder, leading to the discordant motion of the eyeballs. Besides, the diseases caused by cerebral nerves or the brain itself can as well lead to double vision. If you get double vision, you should go to the doctor's for an eye examination, and the doctor will ask you to wear eye glasses or take a surgery of removing cataract according to your actual conditions. If the double vision is caused by diseases in the brain, then you may have to take a surgery such as removing brain tumor. And there is another treatment, that is, eye muscle surgery, which is to recover the damaged eye muscles.