Diplopia has various causes, for instance, migraine, alcohol, glaucoma, brain tumor. Actually, double vision cannot correct by itself. On the contrary, it always depends on doing eye exercises, wearing an eye patch on alternative eyes, prism correction, and surgery or botulinum toxin. However, surgery or botulinum toxin are just fit for severe condition. In addition, medical therapy also helps with double vision. But if you just take double vision for a while. Take easy that you may just be tired and fatigue. Have a good rest is the best thing to do at that time.