Table 1 International Clinical Diabetic Retinopathy Disease Severity Scale



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TABLE 1 International Clinical Diabetic Retinopathy Disease Severity Scale




Proposed Disease Severity Level

Findings Observable upon Dilated Ophthalmoscopy




No apparent retinopathy

No abnormalities




Mild NPDR

Microaneurysms only




Moderate NPDR

More than just microaneurysms but less than severe NPDR




Severe NPDR

Any of the following and no signs of proliferative retinopathy:




PDR

One or both of the following:

  • Neovascularization

  • Vitreous/preretinal hemorrhage

IRMA = intraretinal microvascular abnormalities; NPDR = nonproliferative diabetic retinopathy; PDR = proliferative diabetic retinopathy

Reproduced with permission from Wilkinson CP, Ferris FL III, Klein RE, et al. Proposed international clinical diabetic retinopathy and diabetic macular edema disease severity scales. Ophthalmology 2003;110:1679.


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