Early poliferative diabetic retinopathy Neovascularization of the ... area or mild new neovascularization on or within 1 DD of optic disc (NVD) if fresh vitreous or preretinal hemorrhage, or ...
Scholl GB, Song H-S, Winkler DE, Wray SH . The pattern visual evoked potential and pattern electroretinogram in drusen-associated optic neuropathy. Arch Ophthalmol 1992;110:75–81.