<prompt> Which of the following is classic in proliferative diabetic retinopathy -Soft exudatesHard exudatesNeovascularizationPapilloedema  <response>: Ans. is c i.e., Neovascularization The hallmark of PDR is the occurance of neovascularization over the changes of severe NPDR.Classification of Diabetic retinopathyNonproliferativeProliferativeA Background retinopathy Microaneurysm Dot and blot hemorrhage deep hemorrhage Hard exudate Macular edema Neovascularization of the disc NVD Neovascularization elsewhere in the retina NVE Vitreous hemorrhage Fibrovascular proliferation Traction retinal detachment Iris surface neovascularization rubeosis iridis or neovascular glaucomaB Preproliferative retinopathy Cotton-wool spots soft exudates Venous beading Extensive hemorrhage Intraretinal intravascular abnormalities IRMA 