We report a case of bilateral tonic pupils and decreased corneal sensitivity in a patient with Vogt-Koyanagi-Harada (VKH) disease during pregnancy.

A 33-year-old Korean woman in the sixth month of pregnancy presented with visual impairment in both eyes. Her best corrected visual acuity was 0.2 in the right eye and 0.125 in the left. Slit-lamp examination revealed cells in the anterior chamber and serous retinal detachments in both eyes. The patient was treated with topical corticosteroid in both eyes and posterior subtenon injection of triamcinolone acetonide in the left eye. The serous retinal detachment resolved completely at 2 months in the left eye and at 3 months in the right. As pigmentation of the retina developed, VKH disease was confirmed. The patient complained of photophobia, and both pupils were found to be enlarged to 8 mm without dilation. Light reflex was absent and near reflex was suppressed and slow. After instillation of 0.125% pilocarpine, the pupils were constricted to 3.5 mm and were diagnosed as tonic pupils. Though the patient's corrected visual acuity improved to 0.8 in the right eye and 1.0 in the left at 6 months, her pupils remained unchanged. Corneal sensitivity was decreased.

Tonic pupils may be complicated with VKH disease even during pregnancy. We recommend examinations of the pupils and corneal sensitivity in patients with VKH disease, especially those complaining of photophobia.