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Hypertensive Retinopathy, Stage 2, focal arteriolar narrowing, marked generalised arteriolar narrowing, arteriovenous nicking, opacity, “copper wiring” of arteriolar wall, or a combination of these signs
Hypertensive Retinopathy, Stage 3, Haemorrhage, blot, dot, or flame-shaped, microaneurysm, cotton-wool spot, hard exudate, or combination of these signs
Hypertensive Retinopathy, Stage 4, Signs of stage 3 retinopathy plus swelling of the optic disk