Stages of Diabetic Retinopathy
Diabetic macular edema (DME) can develop at any stage of DR. It is swelling in the macula (the center area of the retina) due to leaky blood vessels.1
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Mild Non-Proliferative Diabetic Retinopathy (NDPR)2 :
A few small blood vessel changes (microaneurysms) are present.
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Moderate NPDR2 :
More small blood vessels changes (microaneurysms), bleeding in the retina and other changes are present.
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Severe NPDR3 :
Blood vessel changes (microaneurysms) and/or bleeding in all areas of the retina or other changes are present.
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Proliferative diabetic retinopathy (PDR)2 :
New abnormal blood vessels grow in the eye.
References
- Early Treatment Diabetic Retinopathy Study Research Group. Grading diabetic retinopathy from stereoscopic color fundus photographs- an extension of the modified Airlie House classification. ETDRS report 10. Ophthalmology. 1991;98:786-806.
- Wong TY, et al. Guidelines on diabetic eye care. Ophthalmology. 2018;125:1608-1622.
- Retina Image Bank. Severe NPDR. 2013;5343.
