Cross-sectional associations of nighttime sleep and daytime nap duration with myopia in preschool children: the mediating role of body mass index - Takeaways - MDSpire

Cross-sectional associations of nighttime sleep and daytime nap duration with myopia in preschool children: the mediating role of body mass index

  • By

  • Xiumei Chen

  • Dan Liu

  • Wei Du

  • Changhua Wu

  • July 7, 2026

  • 0 min

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  • 1

    The study included 695 preschool children aged 3–7 years to investigate sleep duration's association with myopia.

  • 2

    The prevalence of myopia among participants was found to be 21.29%.

  • 3

    Daytime nap duration and nighttime sleep duration were negatively associated with myopia risk, with specific odds ratios reported.

  • 4

    A protective inflection point for daytime napping was identified at 38 minutes.

  • 5

    Body mass index partially mediated the associations between sleep duration and myopia, accounting for significant percentages of total effects.

Original Source(s)

Cross-sectional associations of nighttime sleep and daytime nap duration with myopia in preschool children: the mediating role of body mass index

  • by Xiumei Chen, Dan Liu, Wei Du, Changhua Wu

  • July 7, 2026

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