|
| Severity level | Findings observable |
|
| No DR | No abnormalities |
|
| Mild NPDR | This is the earliest stage of retinopathy and vision is usually normal except in some cases. Small swellings known as micro-aneurysms or flame-shaped hemorrhages start to develop in the fundus quadrants |
|
| Moderate NPDR | There will be micro-aneurysms or hemorrhages of greater severity in one to three quadrants and leakage might occur, resulting cotton wool spots and exudates and so fourth to be present in the retina |
|
| Severe NPDR | Any of the following:
(i) Severe (more than 20) hemorrhages and MAs in all four quadrants of the fundus
(ii) Definite venous beading in at least two quadrants
(iii) Severe damage to the small blood vessels in at least one quadrant but no signs of any PDR |
|
| PDR | One or more of the following:
Neovascularization
Vitreous/preretinal hemorrhage |
|