Septic submacular choroidal embolus associated with intravenous drug abuse.

A 34-year-old male intravenous drug abuser had acute monocular loss of central vision nine days after fundus examination that had given normal results. He had a presumed septic submacular choroidal embolus in association with septic retinitis. No organism was recovered from the blood cultures. The lesion resolved with a residual chorioretinal scar in the macula and permanent loss of central vision.