The International Classification of Diabetic Retinopathy
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The International Classification The International Classification of Diabetic Retinopathyof Diabetic Retinopathy
Proposed international clinical diabetic retinopathy and diabetic macular edema disease severity scales.Ophthalmology 2003Sep;110(9):1677-82.
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The Classification of Diabetic The Classification of Diabetic RetinopathyRetinopathy
• Mild Nonproliferative Diabetic Retinopathy:Microaneurysm only
• Moderate Nonproliferative Diabetic Retinopathy
• Severe Nonproliferative Diabetic Retinopathy: 4, 2, 1
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The Classification of Diabetic The Classification of Diabetic RetinopathyRetinopathy
• Severe Nonproliferative Diabetic Retinopathy:Microaneurysms and/or dot blot
hemorrhages more than 20 dots in 4 quadrant
Venous beading in 2 quadrantsIntraretina Microvascular Abnormalities
(IRMA) in 1 quadrant
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The Classification of Diabetic The Classification of Diabetic RetinopathyRetinopathy
• Proliferative Diabetic Retinopathy:New vessels at the optic discNew vessels elsewhereVitreous hemorrhage
• Macular edemaExudate at macular area
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Microaneurysm / dot blot hemorrhage
Flame-shaped hemorrhage
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exudate
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Macular edema
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Cotton-wool spot
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Mild venous beading
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NVD
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Vitreous hemorrhage
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Key to DR screeningKey to DR screening
• Right or left eye?Right or left eye?• Optic disc: NVOptic disc: NV• Macula: exudateMacula: exudate• Vessels: venous beading, NVEVessels: venous beading, NVE• Background: H/MA, cotton-wool spots, Background: H/MA, cotton-wool spots,
exudate, vitreous hemorrhageexudate, vitreous hemorrhage