ArticlePreventive medicine reports2025
Sleep duration and adolescent vision outcomes: evidence from rural China.
Article in Preventive medicine reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
5 authors.
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Abstract
Objective: To examine the association between weekday sleep duration and visual health among adolescents in low-resource rural settings, and to explore potential behavioral mechanisms. Methods: We used cross-sectional data from 36,139 rural primary and junior high school students in northwestern China (2012, 2019). Visual acuity was assessed via standardized LogMAR tests. To address potential endogeneity in self-reported sleep, we applied two-stage least squares regression with sunset time as an instrumental variable. Results: Students averaged 8.65 weekday sleep hours, and 58.3 % slept fewer than 9 h-below age-specific recommendations. Instrumental variable estimates indicated that each additional weekday sleep hour reduced the LogMAR score by 0.070 ( Conclusions: Insufficient weekday sleep is associated with poorer vision among rural adolescents, potentially mediated by digital screen exposure. School-based programs that promote adequate sleep and reduce nighttime screen use may offer a low-cost, scalable approach to support visual health in under-resourced areas.
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