Ocular sarcoidosis occurring as a unilateral optic disk vascular lesion.

A 36-year-old black man who was taking low doses of systemic corticosteroids for systemic sarcoidosis had a vascular lesion of the left optic disk as the only ocular sign. The lesion regressed over a four-month period with high dosage corticosteroid therapy, but he developed optic atrophy and visual acuity of no light perception.