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Comparative Study
. 2021 Nov;128(11):1655-1657.
doi: 10.1016/j.ophtha.2021.03.029. Epub 2021 Mar 23.

Comparison of Myopic Progression before, during, and after COVID-19 Lockdown

Pingjun Chang  1 , Bing Zhang  1 , Li Lin  1 , Ruru Chen  1 , Siping Chen  1 , Yune Zhao  2 , Jia Qu  3
Affiliations
Comparative Study

Comparison of Myopic Progression before, during, and after COVID-19 Lockdown

Pingjun Chang et al. Ophthalmology. 2021 Nov.
No abstract available

Keywords: COVID-19; Children and teenagers; Chinese students; Community containment; Lockdown; Myopia; Myopic progression; Presenting visual acuity; Refractive error; Reopening; Social policy.

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Figures

Figure 1
Figure 1
Line graphs showing the cross-sectional distribution of (A) the refractive state at each survey round, (B) the proportions of myopia and high myopia by age at each survey round, (C) the spherical equivalent refraction (SER) by age at each survey round, and (D) the age curves of the rate of SER change during each survey period. The curves in (A) are smoothed with kernel density estimates, and the curves in (B–D) are smoothed with fractional-polynomial prediction. CI = confidence interval.
See this image and copyright information in PMC

References

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