Is Double Vision Possible If One Eye Is Blind?
SEP 12, 2014
Answer:
Yes, it is possible.
There are two types of double vision: monocular and binocular: Monocular double vision only affects one eye. When that eye is covered, the double vision disappears. The cause may be astigmatism, some cataracts, some macular diseases, a foreign body, etc., in the affected eye. Obviously, it has nothing to do with the vision in the other eye.
Binocular double vision occurs when the two eyes are not perfectly aligned and looking at the same object at the same time. It disappears when either eye is covered. I don’t know exactly what you mean by the term "blind," as it covers a wide range of impaired vision. Obviously, if one eye cannot see even a very bright light, that patient cannot have binocular double vision.
Everyone who has a recent onset of double vision should be promptly evaluated by an ophthalmologist, as aneurysms, brain tumor, diabetes, myasthenia gravis, thyroid disease, and many serious conditions can cause these symptoms.