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A 39-year-old female asked:

What are causes of vertical monocular diplopia? my mother & i have had this our whole lives. most noticible at close range. i have slight astigmatism.

2 doctor answers4 doctors weighed in
Dr. Bennett Machanic
Neurology 52 years experience
Eye, not nerve: Can be due to irregularities in lens, but also, localized other problems in anterior eye. This can be diagnosed by an ophthalmologist.
Dr. Matthew Goren
Ophthalmology 32 years experience
Likely astigmatism: Monocular diplopia (double vision when only one eye is open) really only has a few causes. Uncorrected astigmatism is probably the most common of these. Other causes can be things like cataract or dry eye disease. It's pretty easy for an ophthalmologist to figure out what is going on with you so it might be worth a visit.

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Last updated Jan 18, 2019

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