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Multicenter Study
. 2021 Nov;128(11):1652-1654.
doi: 10.1016/j.ophtha.2021.04.001. Epub 2021 Apr 14.

COVID-19 Quarantine Reveals That Behavioral Changes Have an Effect on Myopia Progression

Liangde Xu  1 , Yunlong Ma  2 , Jian Yuan  2 , Yaru Zhang  2 , Hong Wang  3 , Guosi Zhang  2 , Changsheng Tu  4 , Xiaoyan Lu  3 , Jing Li  3 , Yichun Xiong  3 , Fukun Chen  3 , Xinting Liu  3 , Zhengbo Xue  3 , Meng Zhou  2 , Wen-Qing Li  5 , Nan Wu  6 , Jinhua Bao  4 , Hao Chen  7 , Fan Lu  7 , Jianzhong Su  1 , Jia Qu  8 ; Myopic Epidemiology and Intervention Study
Affiliations
Multicenter Study

COVID-19 Quarantine Reveals That Behavioral Changes Have an Effect on Myopia Progression

Liangde Xu et al. Ophthalmology. 2021 Nov.
No abstract available

Keywords: COVID-19; Incidence; Intervention study; Myopia; Prevalence.

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Figures

Figure 1
Figure 1
Graphs showing the prevalence of myopia and high myopia and the influence of coronavirus disease 2019 (COVID-19) quarantine on myopia progression. A, Prevalence of myopia and high myopia divided by schoolchildren birth month among all grades at baseline. Each grade was divided into 12 bars according to birth month, ranging from September through August of the next year according to Chinese enrollment policy. B, Differences of grade-specific half-year myopia progression between the period before and after the COVID-19 quarantine. C, Differences in schoolchildren’s online time between the period before and after the COVID-19 quarantine categorized by grade stages I and II. D, Differences in schoolchildren’s outdoor activity time between the period before and after the COVID-19 quarantine categorized by grade stages I and II. To reduce the effects of age increasing during the COVID-19 quarantine, we divided the students of each grade into 2 independent sets (before COVID-19 quarantine vs. after COVID-19 quarantine) according to student birth months: the set before the COVID-19 quarantine includes students from September 1 through February 28 of the next year, and the set after the COVID-19 quarantine includes students from March 1 through August 31 (see Fig S2I). D = diopter.
See this image and copyright information in PMC

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