Double vision is also known as diplopia which is caused by an imbalance of the eye muscles, will only give rise to double images when both eyes are open. It can occur at any age and may not have any obvious cause in some cases. If you feel headache at most time, that will cause double vision. In fact, you should not worry about it in the beginning, it may be treated by some natural ways, such as do some eye exercises, keep away from your computer and so on. Do some surgery is necessary for the serious condition. But this must be looked after in hospital. Immediate relief from the uncomfortable experience of double vision can be achieved by covering one eye. This is usually a very short-term solution. Here, I want to say, you must wear glasses even if you do not wear it usually. And you need to go to see your doctor again after you accepted surgery 12 weeks. That will make your eye surgery more effectivity and make your eyes become good in a short time. Best wishes.