Hypertensive Retinopathy

A 52-year-old man with uncontrolled hypertension (BP 180/110 mmHg) presents with sudden vision loss and headache. Fundoscopy reveals flame-shaped hemorrhages, cotton-wool spots, hard exudates in a macular star pattern, and optic disc swelling. Which investigation is most appropriate to confirm the diagnosis of hypertensive retinopathy and assess for associated end-organ damage?

Which of the following retinal findings is characteristic of Grade 3 hypertensive retinopathy according to the Keith-Wagener classification?

A 52-year-old man from Delhi presents with blurred vision in both eyes for 3 days. He has a 8-year history of hypertension poorly controlled on amlodipine monotherapy. On examination, blood pressure is 178/112 mmHg. Fundoscopy reveals flame-shaped hemorrhages, cotton-wool spots, hard exudates arranged in a macular star pattern, and blurred disc margins. Serum creatinine is 2.1 mg/dL (baseline 0.9 mg/dL). What is the Keith-Wagener-Barker grade of hypertensive retinopathy in this patient?

A 48-year-old woman from Mumbai with a 12-year history of uncontrolled hypertension (currently on no antihypertensive therapy) presents with sudden-onset headache, blurred vision, and confusion for 2 days. Blood pressure is 196/128 mmHg. Fundoscopy shows flame-shaped hemorrhages, cotton-wool spots, papilledema, and macular star exudates. Serum creatinine is 3.2 mg/dL (baseline 0.8 mg/dL), and urinalysis shows proteinuria 4+ with RBC casts. What is the most likely pathophysiological mechanism underlying the retinal findings in this patient?

A 52-year-old man with uncontrolled hypertension (BP 180/120 mmHg) presents with blurred vision. Fundoscopy reveals flame-shaped hemorrhages, cotton-wool spots, and hard exudates in a macular star pattern. Which single finding best distinguishes acute hypertensive retinopathy from chronic hypertensive changes?