A member asked:

What are possible causes of one pupil being dialated more than the other one if not due to lighting or any known injury?

A doctor has provided 1 answer
Dr. Gerald Mandell answered

Specializes in Nuclear Medicine

Anisocoria: Anisocoria is a condition characterized by an unequal size of the eye's pupils. Anisocoria is defined by a difference of 0.4 mm or more between eye's pupilsaffecting 20% of population, it can be an entirely harmless condition or a symptom of more serious medical problems.If this is recent observation should consult ophthalmologist.

Answered 4/22/2013

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