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Unequal pupil dilation
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Unequal pupil dilation

I am an RN and recently within the past two weeks my wife has noticed on two separate occasions that upon awakening her pupils are unequally dilated. However, moments later they respond to light and equalize.

This morning was the second occurrence and I recommended she contact her physician for an opthamology referral. I failed to note if it was the same eye that was more dilated the first time, however this AM I think it was right eye. What are the possible causes?

Please advise.
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The causes of intermittent unequal pupil (anisocoria) are diverse and range from the totally benign such as dilations from over the counter allergy drops, to very serious neurological problems.  If possible I suggest your wife see a neuro-ophthalmologist. You can use the Am Acad of Ophthalmology website www.aao.org   Find An Eye MD feature to find such a specialist in your area.

JCH III MD  Eye Physician & Surgeon
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