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localized constriction of the retinal blood vessels.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
Localized constrictions in retinal blood vessels.
Farlex Partner Medical Dictionary © Farlex 2012
Localized constrictions in retinal blood vessels, seen at arteriovenous crossings; usually due to chronic hypertension.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012