NHS Diabetic Eye Screening Programme in England for retinopathy.

Level	Description	Action
R0—No retinopathy	No retinopathy	Annual rescreen
R1—Background	Haemorrhages and/or microaneurysms Venous loop Any exudate in prescence of other non referable DR features Any CWS in prescence of other non referable DR features	Annual rescreen
R2—Pre-proliferative	Venous beading or reduplication IRMA Multiple deep, round or blot haemmorhages	Refer
R3—Proliferative	- New vessels (disc or elsewhere) - Preretinal or vitreous haemorrhages Preretinal fibrosis±tractional retinal detachment - Advanced retinopathy	Refer urgently