As long as i don't see light, my vision is fine. why does light give me double vision?

Light sensitivity: Light sensitivity may be due to several problems. People with iritis have a red, light-sensitive eye(s). People with cataracts can cause glare and light sensitivity. People with migraine headaches are often light sensitive. Certain medications may cause light sensitivity. If you are still having there problems, and if sunglasses don't solve the problem, see your local ophthalmologist.

It should not: Double vision that is not constant may be normal. Fatigue, stress and strain can cause the double vision to temporarily appear. If the double vision does not resolve within a few minutes of being in lights or is a recent development, you should see an eye doctor.