 Therefore, the purpose of this study is to compare the standard treatment for PDR i.e. Panretinal Photocoagulation with Panretinal Photocoagulation treatment combined with ITV injections of ranibizumab since it is expected that anti-vascular endothelial growth factor VEGF treatment with ITV injections will increase the rate of success of Panretinal Photocoagulation in regression of neovascularization with improved final visual acuity. 