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Hypertensive retinopathy. Description, classification, and prognosis

J B Walsh

    Ophthalmology
    |October 1, 1982
    PubMed
    Summary

    Hypertensive retinopathy involves changes in retinal vessels like narrowing and irregularity due to high blood pressure. Arteriolar narrowing with focal irregularity is the most consistent sign for identifying hypertension.

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    Area of Science:

    • Ophthalmology
    • Cardiology
    • Nephrology

    Background:

    • Marcus Gunn first described hypertensive retinopathy in 1898, noting changes in retinal vessels.
    • Key findings included arteriolar narrowing, caliber irregularity, altered light reflex, and changes in the arterial blood column.
    • Further observations noted arteriovenous crossing changes, capillary abnormalities (cotton-wool spots, hemorrhages), and disc edema.

    Purpose of the Study:

    • To review the historical description and current understanding of hypertensive retinopathy.
    • To elucidate the physiological response of retinal vessels to elevated systemic blood pressure.
    • To identify consistent ophthalmoscopic findings for diagnosing hypertension and prognosticating survival.

    Main Methods:

    • Review of historical descriptions of hypertensive retinopathy.
    • Analysis of the physiological mechanisms of retinal vascular response to hypertension.
    • Evaluation of ophthalmoscopic findings for diagnostic and prognostic accuracy.

    Main Results:

    • Retinal vessels constrict in response to elevated blood pressure, potentially causing necrosis, edema, hemorrhages, and disc edema.
    • Controlled or slowly rising blood pressure, or arteriolar sclerosis, can lead to arteriolar irregularity and segmental constriction.
    • Arteriolar narrowing with focal irregularity is the most reliable ophthalmoscopic sign for differentiating hypertensives from nonhypertensives.

    Conclusions:

    • Hypertensive retinopathy manifests as characteristic changes in retinal vessels.
    • Ophthalmoscopic examination remains crucial for diagnosing hypertension and assessing its impact on the retina.
    • The Keith-Wagener-Barker classification aids in prognosis, though modifications exist due to classification challenges.

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