Impression cytology of the ocular surface and tear function in patients with periocular vitiligo.

Purpose: We evaluated the ocular surface and tear function in patients with periocular vitiligo in this prospective, case-control study.

Methods: Sixty eyes of 30 vitiligo patients with periocular involvement and 100 eyes of 50 control subjects were included in the study. Patients and control subjects were compared for Schirmer test and tear film break-up time (BUT) results and impression cytology findings graded according to Nelson's classification.