Comparison of pupil size in patients of migraine with photophobia versus normal subjects and correlation of the pupil size to severity of headache.

Purpose: To compare the pupil size of patients having migraine with photophobia versus normal subjects and to correlate the pupil size to the severity of headache.

Methods: This was a prospective case-control study. One hundred eyes of 50 patients who had migraine with photophobia were compared with same number of control subjects who had no history of headache.