Pupils in the eye

What causes one pupil of the eye larger than the other one?


This discussion is related to One pupil bigger than the other.

[Michael J Kutryb, MD]

Could be a trait you were born with, could be due to trauma, adies pupil, horner's syndrome, third nerve palsy just for starters.  Some causes are harmless others are very serious.  See an ophthalmologist to find out the cause in your situation.

MJK MD

[Michael J Kutryb, MD]

By the way the scientific term for difference in pupil size is anisocoria - and one last thing - sometimes the smaller pupil is the abnormal one.

MJK MD