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A 45-year-old member asked:

The cornea in my left eye won't focus. the pupil doesn't become big and small like it's supposed to. what could be wrong?

1 doctor answer1 doctor weighed in
Dr. David Chandler
Ophthalmology 34 years experience
Immobile pupil: The pupil changes size related to light, dark, and focusing. This is from iris changes, as the pupil itself is merely an opening in the iris. A non-reactive pupil can definitely be a sign of a problem, including chemical related dilation or constriction of the pupil, a nerve paralysis, or an inflammatory problem of the eye such as iritis. This should be promptly evaluated by an ophthalmologist.
Last updated Nov 28, 2014

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