Yuwei Zhang, Huijuan Luo, Shuaixing Song, Ran Qin, Yanhua Chen, Ming Wu, Liru Wang, Ciyong Lu, Xin Guo
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Regional Heterogeneity in Screen Time and Usage Habits Associated with Insufficient Hyperopic Reserve in Schoolchildren - 9 PLADs, China, 2020-2024.
What is already known about this topic?: Insufficient hyperopic reserve serves as a preclinical indicator of myopia development and is influenced by socioeconomic factors and behavioral patterns. However, region-specific risk profiles remain inadequately characterized.
What is added by this report?: This nationwide investigation demonstrates substantial regional heterogeneity in myopia risk factors. Children residing in low-gross domestic product (GDP) regions exhibit significantly stronger associations between screen time usage and poor screen habits with insufficient hyperopic reserve. This relationship is most pronounced among girls in low-GDP areas.
What are the implications for public health practice?: Public health interventions should prioritize targeted screen use guidance for children, particularly girls in socioeconomically disadvantaged regions, to effectively protect visual health and prevent myopia progression.
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