Changes in visual acuity in a population - The Beaver Dam Eye Study
Changes in visual acuity in a population - The Beaver Dam Eye Study
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DOI：
10.1016/s0161-6420(96)30526-5
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发表时间：
1996-08-01
期刊：
影响因子：
13.7
通讯作者：
Lee, KE
中科院分区：
文献类型：
--
作者：
Klein, R;Klein, BEK;Lee, KE
目的：描述参与一项大型人群研究的人在5年期间的视力变化。方法：使用对早期治疗糖尿病视网膜病变研究方案进行修改的logMAR图表，对居住在威斯康星州比弗达姆的3684人进行折射后的最佳矫正视力测量，这些人在1988年至1990年基线检查时年龄从43岁到86岁不等，在1993年至1995年随访检查时年龄从43岁到86岁不等。结果：在5年期间，43 - 54岁人群正确阅读字母数量的变化从0.4 +/- 4.9（平均+/-标准差）到75岁及以上人群基线时的-5.2 +/- 15.4。在5年期间，2.9%的人视力受损（好眼视力受损20/40或更差），0.3%的人视力严重受损（好眼视力受损20/200或更差）。视角在1.7%的人口翻了一番,和2.4%提高了视觉,在基线75岁或以上的人的12.5倍(95%可信区间[CI], 8.6 - -18.2; P < 0.001)更可能有视力下降,9.7倍(95% CI, 5.9 - -16.0; P < 0.001)更可能有翻倍的视角,和78倍(95% CI, 9.9 - -614.1; P < 0.001)有严重的视力损害比人们75岁以下在基线。75岁以上住在养老院或集体之家的人视力受损的可能性是没有住在养老院或集体之家的人的3.8倍，严重视力受损的可能性是3.3倍，视角翻倍的可能性是5.7倍。结论：这些数据提供了广泛年龄范围内以人群为基础的视力丧失发生率的精确估计，并表明75岁以上的人视力下降是一个普遍的发现，特别是那些在养老院或集体之家的人。
Purpose: To describe the change in visual acuity over a 5-year period in persons participating in a large population-based study.Methods: Best-corrected visual acuity was measured, after refraction, with logMAR charts using a modification of the Early Treatment Diabetic Retinopathy Study protocol in 3684 persons living in Beaver Dam, Wisconsin, who ranged in age from 43 to 86 years at the time of a baseline examination from 1988 to 1990, and at a follow-up examination from 1993 to 1995.Results: The change in the number of letters read correctly over the 5-year period varied from 0.4 +/- 4.9 (mean +/- standard deviation) in people between 43 and 54 years of age to -5.2 +/- 15.4 in people 75 years of age or older at baseline. Over the 5-year period, vision became impaired (20/40 or worse in the better eye) in 2.9% of the population and severely impaired (20/200 or worse in the better eye) in 0.3%. The visual angle doubled in 1.7% of the population, and 2.4% had improved vision, People 75 years of age or older at baseline were 12.5 times (95% confidence interval [CI], 8.6-18.2; P < 0.001) more likely to have impaired vision, 9.7 times (95% CI, 5.9-16.0; P < 0.001) more likely to have doubling of the visual angle, and 78 times more likely (95% CI, 9.9-614.1; P < 0.001) to have severe visual impairment than people younger than 75 years of age at baseline. People 75 years of age or older who were living in nursing homes or group homes were 3.8 times more likely to have impaired vision, 3.3 times more likely to have severely impaired vision, and 5.7 times more likely to have a doubling of the visual angle than those not residing in a nursing home or a group home.Conclusion: These data provide precise population-based estimates of incidence of visual loss over a wide spectrum of ages and show that decreased visual acuity in people 75 years of age is a common finding, especially in those who are in nursing homes or group homes.