Hypertensive retinopathy is damage to the retina and retinal circulation due to high blood pressure (i.e. hypertension). Signs and symptoms
Most patients with hypertensive retinopathy have no symptoms. However, some may report decreased or blurred vision, and headaches. Signs
Signs of damage to the retina caused by hypertension include:

Arteriolar changes, such as generalized arteriolar narrowing, focal arteriolar narrowing, arteriovenous nicking, changes in the arteriolar wall (arteriosclerosis) and abnormalities at points where arterioles and venules cross. Manifestations of these changes include Copper wire arterioles where the central light reflex occupies most of the width of the arteriole and Silver wire arterioles where the central light reflex occupies all of the width of the arteriole, and "arterio-venular (AV) nicking" or "AV nipping", due to venous constriction and banking. advanced retinopathy lesions, such as microaneurysms, blot hemorrhages and/or flame hemorrhages, ischemic changes (e.g. "cotton wool spots"), hard exudates and in severe cases swelling of the optic disc (optic disc edema), a ring of exudates around the retina called a "macular star" and visual acuity loss, typically due to macular involvement. Strongly modulated blood flow pulse in central and branch arteries can result from hypertension. Microangiography by laser Doppler imaging may reveal altered hemodynamics non-invasively.Mild signs of hypertensive retinopathy can be seen quite frequently in normal people (3–14% of adult individuals aged ≥40 years), even without hypertension. Hypertensive retinopathy is commonly considered a diagnostic feature of a hypertensive emergency although it is not invariably present.
Treatment with antihypertensive medications may be required to control the high blood pressure. See also
Hypertensive crisis
List of systemic diseases with ocular manifestations
Ophthalmology
Optometry

References
Further reading
The Wills Eye Manual: Office and Emergency Room Diagnosis and Treatment of Eye Disease, J.B. Lippincott, 1994. Hypertensive retinopathy


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