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What causes double vison?

By Anonymous October 12, 2017 - 9:35pm
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Pain first beside eye then double vision

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How long does it last I had an car accident that makes my vision isnot aligned well it's been four months since I was in self induced coma for 8days my vision is better but very frustrating!!!HELP!!

September 21, 2018 - 3:33pm
Guide (reply to Anonymous)

Hello, Anon.

This can vary from patient to patient as each case is different. Sometimes double vision can take months to completely go away. You should follow up with your doctor about this if you have not done so.


September 21, 2018 - 4:26pm

Hello Anonymous,

Welcome to EmpowHER.

Double vision in one eye is known as monocular double vision. Double vision continues when the unaffected eye is covered, but you should be able to see normally when the affected eye is covered.
It can be caused by:
an irregularly shaped cornea (astigmatism), which is a refractive error
dry eye, which is when your eye does not produce enough tears
abnormalities of the cornea
abnormalities of the lens, such as cataracts (cloudy patches over the lens)
abnormalities of the retina, such as macular degeneration
The cornea is located at the front of the eye and acts like a camera lens, helping to focus the light coming into the eye.
The retina is a light-sensitive layer of tissue at the back of the eye that converts light entering the eye into electrical signals.

Double vision caused by both eyes failing to work together properly is known as binocular double vision. If you have binocular double vision, your vision will usually be normal if either eye is covered.
If you have binocular double vision, your eyes will point at slightly different angles, causing them to send different images to your brain. The images from each eye are too different for your brain to create a clear, single image. This results in you seeing double images.


October 13, 2017 - 8:12am
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