1. How OCT angiography is improving our view of diabetic retinopathy

    How OCT angiography is improving our view of diabetic retinopathy

    The Early Treatment Diabetic Retinopathy Study (ETDRS) established and refined the current clinical grading of diabetic r etinopathy that retina specialists use as an adaptation of the Modified Airlie House Classification. The parameters of the grading system rely primarily on identifying somewhat indirect signs of microvascular ischemic disease that include retinal hemorrhages, venous beading, intraretinal microvascular abnormalities or preretinal neovascularization. However, identifying indirect signs of microvascular disease is fraught with challenges in ensuring reproducibility among different observers and operators, which may introduce error into research or clinical settings. ETDRS made attempts to measure and minimize this variability and found that ...

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