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<p>Reduced visual acuity, defined according to the Technical Standard for Physical Examination for Students (GB/T 26343 − 2010) as unaided distance visual acuity below 5.0 on the 5-grade notation scale (equivalent to LogMAR ＞ 0.0), affects more than 40% of junior high school students in China. Lifestyle factors have been implicated in refractive development; however, the role of social jet lag remains unclear. We examined the association between large social jet lag, defined as a sleep midpoint discrepancy exceeding 1&#xa0;h between school and leisure days, and incident visual acuity decline over one year. In this retrospective cohort study, 903 students from 2 junior high schools in Yangzhou, China were included. Baseline lifestyle-related information was extracted from pre-2020 records. Initial visual acuity was assessed in 2020, with follow-up assessment in 2021. Incident visual acuity decline was defined as a deterioration of at least 1 acuity grade. During follow-up, 77 students (8.5%) experienced visual acuity decline. Large social jet lag, observed in 28.9% of participants, was independently associated with an increased risk of visual acuity decline (adjusted RR = 1.77, 95% CI: 1.13–2.78). These findings suggest that social jet lag is associated with visual acuity decline in junior high school students and may represent a relevant lifestyle-related factor in adolescent visual health.</p>

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Social jet lag and visual acuity decline in junior high students: a retrospective cohort study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月8日

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  • Yuexia Liao,
  • Wenrui Sun,
  • Yiran Zhang,
  • Yun Sun,
  • Qianqian Zhen,
  • Xiaoyu Zhu

摘要

Reduced visual acuity, defined according to the Technical Standard for Physical Examination for Students (GB/T 26343 − 2010) as unaided distance visual acuity below 5.0 on the 5-grade notation scale (equivalent to LogMAR ＞ 0.0), affects more than 40% of junior high school students in China. Lifestyle factors have been implicated in refractive development; however, the role of social jet lag remains unclear. We examined the association between large social jet lag, defined as a sleep midpoint discrepancy exceeding 1 h between school and leisure days, and incident visual acuity decline over one year. In this retrospective cohort study, 903 students from 2 junior high schools in Yangzhou, China were included. Baseline lifestyle-related information was extracted from pre-2020 records. Initial visual acuity was assessed in 2020, with follow-up assessment in 2021. Incident visual acuity decline was defined as a deterioration of at least 1 acuity grade. During follow-up, 77 students (8.5%) experienced visual acuity decline. Large social jet lag, observed in 28.9% of participants, was independently associated with an increased risk of visual acuity decline (adjusted RR = 1.77, 95% CI: 1.13–2.78). These findings suggest that social jet lag is associated with visual acuity decline in junior high school students and may represent a relevant lifestyle-related factor in adolescent visual health.