Classification of Diabetic Retinopathy : Pre-proliferative Retinopathy
With increasing ischaemia, cotton wool spots become more prevalent...
Typically, preproliferative retinopathy will consist of multiple cotton wool spots (1), multiple dot and blot haemorrhages (2), venous changes (3) and intra-retinal microvascular abnormalities...
Steve Bain, Jon Gibson, Paul Dodson, Graham Sedgwick