You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is classic in proliferative diabetic retinopathy - and explain in detail?
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 glaucoma)B) Preproliferative retinopathy* Cotton-wool spots (soft exudates)* Venous beading* Extensive hemorrhage* Intraretinal intravascular abnormalities (IRMA)