system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
One of the following is NOT a sign of diabetic retinopathy-
assistant
The correct answer is  Non-proliferative diabetic retinopathy (NPDR) Opthalmoscopic features of NPDR include: Microaneurysm are seen in the macular area (the earliest detectable lesion) . These are formed due to focal dilation of capillary wall following loss of pericytes. These appaear as red dots and leak fluid, proteins.", lipids and also fluorescein dye on FFA. Retinal haemorrhages Retinal oedema Hard exudates Cotton-wool spots Venous abnormalities Intraretinap microvascular abnormalities (IRMA) Dark-blot haemorrhages Ref;A.K.Khurana; 6th edition; Page no: 278