Table 1 Classification of Diabetic Retinopathy and Diabetic Macular Edema
Diabetic retinopathy | Findings observable on retinal image |
|---|---|
No apparent DR | No abnormalities |
Moderate Non-proliferative DR | Microaneurysms and other signs less than severe Non-proliferative DR: • Dot and blot hemorrhages • Hard exudates • Cotton wool spots • Venous beadings |
Severe Non-proliferative DR | Moderate non-proliferative DR with any of the following: • Intraretinal hemorrhages • Definite venous beading (in 2 quadrants); • Intraretinal microvascular abnormalities • No signs of proliferative retinopathy |
Diabetic macular edema (DME) | Findings observable on retinal image |
CSME | Retinal thickening in the macula that does not involve the central subfield zone that is 1mm in diameter or retinal thickening in the macula that does involve the central subfield zone that is 1mm in diameter |