Mild NPDR At least one microaneurism Criteria not met for other level of retinopathy Moderate NPDR Hemorrhage/microaneurism>= standard photograph OR Soft exudates(cotton wool spots),Venus beading and intraretinal microvascuar abnormality definitely present Criteria not met for sever NPDR or very sever NPDR or PDR Sever NPDR Hemorrhage/microaneurism>= standard photograph in all 4 quadrants Or Venus beading in at least  two quadrants Or Intraretinal microvascular abnormality >=standard photograph in at least one quadrant

Table 1: Classification of non-proliferative diabetic retinopathy according to the severity.