VISUAL-ACUITY AND CONTRAST SENSITIVITY IN RELATION TO FALLS IN AN ELDERLY POPULATION
VISUAL-ACUITY AND CONTRAST SENSITIVITY IN RELATION TO FALLS IN AN ELDERLY POPULATION
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DOI：
10.1093/ageing/20.3.175
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发表时间：
1991-05-01
期刊：
影响因子：
6.7
通讯作者：
WEBSTER, IW
中科院分区：
文献类型：
--
作者：
LORD, SR;CLARK, RD;WEBSTER, IW
采用双对比字母图和墨尔本边缘测试（MET）对95名老年旅舍居民（平均年龄= 83岁）的视力和对比敏感度进行了测量。视力（视敏度、MET、低对比视敏度、高低对比视敏度之差）随年龄显著下降，且四项指标均显著相关。患有临床眼病的受试者视力比没有眼病的受试者差，尽管差异并不显著。当受试者站在坚实的基座上时，视觉敏锐度和对比敏感度与身体摇摆无关。然而，当受试者被放置在提供较少支撑的情况下（站在柔顺的表面上），身体摇摆与视力和对比敏感度差有关。在一年的随访中，跌倒一次或多次的人与没有跌倒的人在对比敏感度上也存在差异。视力下降可能是老年人体位失衡和跌倒的一个易感因素。
Visual acuity and contrast sensitivity were measured in 95 residents of a hostel for the aged (mean age = 83 years) using a dual-contrast letter chart and the Melbourne Edge Test (MET). Vision (as measured by visual acuity, the MET, low-contrast visual acuity, and difference between high- and low-contrast acuity) decreased significantly with age and all four measures were significantly correlated. Subjects with a clinical eye disorder had poorer vision than those without a disorder although the differences were not significant. Visual acuity and contrast sensitivity were not associated with body sway when subjects were standing on a firm base. However, when the subjects were placed in a situation which provided reduced support (standing on a compliant surface), body sway was associated with poor visual acuity and contrast sensitivity. There was also a difference in contrast sensitivity between those who fell one or more times in a year of follow-up and those who did not fall. It appears that reduced vision may be a predisposing factor to postural imbalance and falls in elderly persons.