Ophthalmoscopic examination of the retinal vasculature of 159 men over age 30 showed a significant increase in mild vascular changes in vasectomized as compared to nonvasectomized men. Although this preliminary study revealed no significant difference in blood pressures when the two groups were compared, vasectomized men age 40 and under had an increased frequency of arteriolar constriction in comparison with the control group. The authors suggest that this noninvasive method may be useful for future studies.
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FAHRENBACH et al. (1980) studied this question.
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