Abstract: Introduction: Posterior uveitis (PU) and retinal vasculitis (RV) usually progress toward severe loss of vision or blindness, if not aggressively treated. The aim of this study is to evaluate the efficacy of Pulse Cyclophosphamide (PCP) in a cohort study. Methods: This study includes all patients treated with PCP from 1986 to 1998, for active PU and or RV. PCP was administered as Ig cvclophosphamide/m2/body surface, once per month. Prednisolone was given ...