Review Article
Ocular Complications of Diabetes and Therapeutic Approaches
Table 1
Progressive stages of diabetic retinopathy and the clinical signs.
| Stages of diabetic retinopathy | Clinical signs |
| Mild NPDR | Microaneurysms | Moderate NPDR | Intraretinal hemorrhages, hard exudates, cotton wool spots, and venous beading less than required for severe NPDR | Severe NPDR | Extensive intraretinal hemorrhages in each of 4 quadrants, venous beading in more than 2 quadrants, and one intraretinal microvascular abnormality | PDR | Neovascularization, vitreous/preretinal hemorrhage |
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NPDR: nonproliferative diabetic retinopathy. PDR: proliferative diabetic retinopathy.
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