My wife has been diagnosed with Night blindness. What could be cause of this condition? She is 46 years old and she doesn’t have history of eye disorders or problems.
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Night blindness is not a diagnosis, but rather a symptom of an underlying disorder and probably nearsightedness. The most common cause of night blindness is uncorrected myopia, so this occurs because the individual with myopia will commonly become even more nearsighted as the pupil dilates at night. However, patients being treated with glaucoma medications which constrict the pupil will also frequently have night blindness, because the small pupil allows minimal light to enter the eye. a retinal degenerative disorder, also commonly presents with night blindness or some Much less common causes of night blindness include the retinal disorders gyrate atrophy, choroideremia, and congenital stationary night blindness
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