Table I.

DR staging criteria developed by the Third Sector National Eye Conference in 1985.

Typing	Staging	Retinopathy
Simple DR, also known as background DR	I: Microaneurysms, punctate and hemorrhage	(+): Less, easy to be counted. (++): More, difficult to be counted
	II: Hard exudates and/or bleeding	(+): Less, easy to be counted. (++): More, difficult to be counted
	III: Cotton wool turbidity (soft exudates) and/or bleeding	(+): Less, easy to be counted. (++): More, difficult to be counted
Proliferative DR	IV	Retinal neovascularization or vitreous hemorrhage
	V	Retinal neovascularization and fibrous proliferation
	VI	Retinal neovascularization and fibrous proliferation, retinal detachment

DR, diabetic retinopathy.