Do I have double vision or do I just need new glasses?

Question

I have had my current glasses for about 4 years and in around the last few months, I've noticed that if I look at a tv screen on the top I experience VERY SLIGHT double vision. My prescription is definately expired. It's almost as if the object isn't sharp. I'm guessing that I just need new glasses. I have no family history of this kind of eye problem. I'm going for and eye exam tomorrow. Wish me luck! Your opinions would be appreciated. I'm near-sighted in case you wanted to know.

Answer 1

Double vision can have many different causes, but it is important to distinguish between double vision seen with one eye alone, as opposed to that seen with both eyes at the same time. In other words, if the double vision disappears when one or the other eye is closed, it is due to a misalignment between the two eyes.  When the double vision is present even with one eye closed, it may be due to optical problems with the eye, or refractive problems. This can come from improper glasses prescriptions, cataract, or corneal scars.  An uncorrected glass prescription, especially if nearsighted or with astigmatism, can lead to ghost images or slight double vision.

Good luck with your eye exam and hopefully they could figure out the cause of your double vision ASAP.