屈光误差会影响一半的美国成年人的愿景

根据8月期问题的一份报告，大约大约20岁的美国成年人和年龄较大的屈光误差，或导致少于20/20愿景的眼问题眼科档案馆， 其中一个贾马/档案期刊。

根据文章的背景信息，屈光误差占美国居民的近80％的视力损害。它发生在眼睛无法正确聚焦光线时，导致近视，远视或散光，是眼角角的不规则曲线。为需要12岁及更老年人的人提供眼部护理，估计每年3.8至72亿美元的成本。

Susan Vitale, Ph.D., M.H.S., and colleagues at the National Eye Institute, Bethesda, Md., analyzed data from the National Health and Nutrition Examination Survey (NHANES), an ongoing nationally representative survey conducted by the Centers for Disease Control and Prevention. Demographic characteristics were collected during in-person interviews and a vision examination was conducted.

资料来源：Jama和Archives期刊

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