Abstract: The chronic macular edema, frequent in ocular Behcet's disease, is a treat to the visual outcome of the patients. We have investigated the origin, risk-factors and the outcome of macular edema in patents under immunosuppressors and corticosteroid therapy. This is a retrospective, case series study. In 1999,seventeen patients of the Behcet's clinic of Shariati hospital of Tehran who had macular edema were consecutively selected and included in the study. They were ...