户外活动，日长与近视发作，进展

（健康日） - 户外活动的曝光与近视和近视偏移的新发起相关联，据可能发表的两项研究眼科。

Pei-Chang Wu, M.D., Ph.D., from the Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine in Taiwan, and colleagues examined myopia changes in a cohort of 571 elementary school students, aged 7 to 11 years, recruited from two schools. In one school (333 students), children were encouraged to participate in outdoor activities during recess, while in the control school (238 students), there were no special programs during recess. The researchers found that, after one year, new onset of myopia was significantly lower in the intervention school (8.41 percent) than in the control school (17.65 percent). Myopic shift was also significantly lower in the intervention group.

Dongmei Cui, M.D., Ph.D., from the SunYat-sen University in Guangzhou, China, and colleagues examined whether axial eye growth, myopia progression, or corneal power change in Danish myopic children varies with the length of day in a cross-sectional study involving 235 children aged 8 to 14 years with myopia. The researchers observed significant correlations between the hours of daylight and eye elongation, myopia progression, and corneal power change, with decreased axial眼睛增长和近视的进展和增加的角膜功率变化，暴露在更夏令时。

“这些发现支持实验性和流行病学结果，指向光的保护作用和在户外户外的发展近视，“崔和同事写道。

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