Answer 2 Arteriolar narrowing. The classification system for hypertensive retinopathy consists of 4 grades as follows:    • Grade I: mild narrowing of the retinal arterioles    • Grade II: arteriovenous nicking (ie, venous compression        at arteriovenous crossings)    • Grade III: cotton-wool spots, hemorrhages, retinal edema    • Grade IV: optic disc edema Grades 1 and 2 are considered nonmalignant hypertension whereas grades 3 and 4 are considered malignant. Click here to return to the questions

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