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    Default Classification of Diabetic retinopathy

    By Dr.Reda Gomah El Garia

    Classification of Diabetic retinopathy




    1- Mild non-proliferative diabetic retinopathy (NPDR): At least one microaneurysm.


    2- Moderate non-proliferative diabetic retinopathy : intraretinal haemorrhages or microaneurysms , and/or cotton-wool spots, venous beading, intraretinal microvascular abnormalities (IRMA).


    3- Severe nonproliferative diabetic retinopathy: relies on the 4–2-1 rule, which requires one of the following:


    • Intraretinal haemorrhages or microaneurysms in 4 quadrants.
    • Venous beading in 2 quadrants.
    • IRMA in 1 quadrant.

    Classification Diabetic retinopathy attachment.php?attachmentid=3303&d=1507710897


    4- Very severe non-proliferative diabetic retinopathy: at least two of the criteria for severe NPDR.


    5- Non-high risk proliferative diabetic retinopathy: new vessels on the disc (NVD) or elsewhere (NVE), but criteria not met for high-risk proliferative diabetic retinopathy (PDR) below.


    6- High-risk proliferative diabetic retinopathy: at least one of the following:
    • NVD >1/3 disc area.
    • NVD plus vitreous or preretinal haemorrhage.
    • NVE >1/2 disc area plus preretinal or vitreous haemorrhage.


    7- Advanced proliferative diabetic retinopathy : tractional retinal detachment.


    High risk DR from 3 to 7


    NB..


    • Macular exudates or thickening can occur with any severity of retinopathy.


    • Treatment is advised if there is clinically significant macular oedema (CSMO) comprising at least one of the following:
    1- Thickening of the retina within 500μm of the fovea.
    2- Hard exudates located within 500μm of the fovea with adjacent retinal thickening.
    3- Retinal thickening at least one disc area in size, part of which is located within one disc diameter of the fovea.











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