Acute visual loss following dapsone-induced methemoglobinemia and hemolysis.

Objective: While methemoglobinemia is a possible complication of chronic dapsone therapy or of acute overdose, serious adverse manifestations related to methemoglobin formation remain rare. We present an unusual case with severe ischemic retinal injury.

Case Report: A 30-year-old African woman presented with a sudden decrease of visual acuity secondary to retinal ischemia.