Abstract: Introduction: There are several reports of good effects of Cyclosporine A (CsA) in the treatment of Behcet's disease (BD). We studied the long term effect of CsA in prospective open clinical trial on posterior uveitis (PU) and retinal vasculitis (RV) of BD. Materials & Methods: Twenty three patients with PU and/or RV diagnosed as BD (according to the Iran and to the Japan criteria) were selected. Initially CsA 5 mg/Kg/day orally ...