case report: we report a 66-year-old male who exhibited an exudative retinal vasculopathy, diagnosed as coats disease of adult onset, treated with laser photocoagulation. discussion: most cases of coats disease are diagnosed in childhood. when this entity appears in adults it usually exhibits a more benign clinical course. diagnosis of this condition must be considered in those patients showing a retinal vasculopathy with a marked exudative component. treatment is indicated if the fovea is threatened by lipid deposition.