What are the treatments for double vision?

I went on a fast for nearly two months and then I started vomiting green bile and had to spend a week in the hospital.I have double vision now because of it.Its awful I read on wikipediathat there are eye exercises that you can do to correct it.but they wouldn't tell me.Do any of you eye doctors know of any that can help to correct or at least improve it.Please its awful I wish I had never gone on that fast