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American Journal of Epidemiology Vol. 150, No. 3: 263-270
Copyright © 1999 by The Johns Hopkins University School of Hygiene and Public Health

other

Retinal Arteriolar Diameters and Elevated Blood Pressure

The Atherosclerosis Risk in Communities Study

A. Richey Sharrett1,, Larry D. Hubbard2, Lawton S. Cooper1, Paul D. Sorlie1, Rosemary J. Brothers2,4, F. Javier Nieto3, Joan L. Pinsky1 and Ronald Klein2

1Clinial Applications and Epidemiology Program, National Heart, Lung, and Blood Institute Bethesda, MD
2Department of Ophthamology, University of Wisconsin Madison, WI
3Department of Epidemiology, School of Hygiene and Public Health, The Johns Hopkins University Baltimore, MD

Reprint requests to Dr. A. Richey Sharrett, National Heart, Lung, and Blood Institute, Division of Epidemiology of Clinical Applications, Two Rockledge Center, 6701 Rockledge Drive, MSC 7934, Bethesda, MD 20892-7934.

4Present address: Ophthalmic Imaging Systems, Sacramento, CA.

Narrowing and other changes in retinal arterioles may reflect damage due to hypertension, which may predict stroke and other cardiovascular diseases independently of blood pressure level. Newly developed quantitive methods of assessing retinal narrowing are used to determine whether this sign is related only to current blood pressure or whether it also independently reflects the effects of previous blood pressure. Retinal photography was performed at the third examination of Atherosclerosis Risk in Communities (ARIC) Study in 1993–1995, and results are presented for the 9, 300 nondiabetic participants aged 50–71 years. Generalized narrowing of smaller arterioles was strongly and monotonically related to current blood pressure in men and women, whether they wer taking antihypertensive medications or not, and, independent of current blood pressure, was consistently and mononically related to blood pressure levels measured 3 and 6 years before the retinal assessment. Arteriovenous nicking was also independently related to both current and previous blood pressures. The patterns of association suggested that these signs reflect both transient and persisting structural effects of elevated blood pressure, in agreement with the scant pathologic literature available. The findings suggest that retinal assessment may be useful for research on the microvascular contributions to clinical cardiovascular diseases. Am J Epidemio 1999; 150; 263-70.

arterioles; arteriosclerosis; blood pressue; cardiovascular diseases; microcirculation; retinal artery


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