Abnormalities of retinal microvascular structure and risk of mortality from ischemic heart disease and stroke.

Published

Journal Article

Abnormalities of the retinal microcirculation are found in hypertension and diabetes and predict cardiovascular mortality. This study examined the relationship between abnormalities of the retinal microvasculature and death from ischemic heart disease (IHD) and stroke. A population-based, nested case-control study was undertaken within the Beaver Dam Eye Study. Subjects (43 to 74 years) who died of IHD (n=126) or stroke (n=28) over a 10-year period were age and gender matched with controls subjects (n=528; case:control matching, approximately 1:4). Retinal photographs of cases and controls were digitized and analyzed using a computer-based technique. Increased risk of IHD death was associated with a suboptimal relationship of arteriolar diameters at bifurcation (P=0.02 unadjusted) and decreased retinal arteriolar tortuosity (P=0.011 unadjusted). These associations remained significant after adjustment for age, sex, past history of cardiovascular disease, and other known cardiovascular risk factors. Increased arteriolar length:diameter ratio, a measure of generalized arteriolar narrowing, was associated with increased stroke mortality (P=0.02 unadjusted). This association was independent of age and gender but was attenuated by adjustment for systolic blood pressure (P=0.15). Other quantitative measures of the retinal microvascular network (eg, venular tortuosity and arteriolar and venular bifurcation angle) were not associated with death from IHD or stroke. Retinal microvascular abnormalities are predictive of death from IHD and stroke. A detailed assessment of the retinal microvascular network from digitized photographs may be useful in the noninvasive assessment of target organ damage and cardiovascular risk.

Full Text

Duke Authors

Cited Authors

  • Witt, N; Wong, TY; Hughes, AD; Chaturvedi, N; Klein, BE; Evans, R; McNamara, M; Thom, SAM; Klein, R

Published Date

  • May 2006

Published In

Volume / Issue

  • 47 / 5

Start / End Page

  • 975 - 981

PubMed ID

  • 16585415

Pubmed Central ID

  • 16585415

Electronic International Standard Serial Number (EISSN)

  • 1524-4563

Digital Object Identifier (DOI)

  • 10.1161/01.HYP.0000216717.72048.6c

Language

  • eng

Conference Location

  • United States