Dr. Keerthivarman Rukmangathan; Dr. P. Nandhakishore; Dr. Ramusiddharthan Ravichandran; Dr. Ranjan Chandrasekaran. Prognostic Factors in Pars Plana Vitrectomy for Proliferative Diabetic Retinopathy. Trop j ophthalmol otolaryngol 2020, 5, 116-124.