Diabetic Retinopathy, Proliferative

The key funduscopic feature of proliferative diabetic retinopathy is neovascularization of the optic disk (top) or retinal surface (bottom).

Images courtesy of Drs. B McCuen (top) and R Machemer (bottom). From Machemer R, Michelson G (eds.): Atlas of Ophthalmology via the Online Journals of Ophthalmology. Available at www.onjoph.com.