Treatment of cystoid macular edema with acetazolamide in a patient with serpiginous choroidopathy.

A patient with serpiginous choroidopathy had decreased visual acuity and cystoid macular edema. He was treated with acetazolamide, a carbonic anhydrase inhibitor. After 2 weeks of treatment, the patient's visual acuity improved and there was complete resolution of the cystoid macular edema. Improvement in extrafoveal scotopic retinal sensitivity was documented.