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Fundus photographs demonstrating a variety of retinal pathologies. (a) Microaneurysms (ETDRS level 20) (b) CSME (ETDRS level 35D). (c) Moderate NPDR (ETDRS level 35F) (d) Moderate NPDR (ETDRS level 43B) e) PDR (ETDRS level 65C) f) PDR (ETDRS level 65B) ETDRS: Early treatment diabetic retinopathy study, CSME: Clinically significant macular edema, NPRDR: Non-proliferative diabetic retinopathy, PDR: Proliferative diabetic retinopathy
