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Peer-reviewedCC BY-NC-NDBMC public health

Trunk-rotation and posture-screening markers in relation to refractive anisometropia among schoolchildren in Nantong, China: a cross-sectional school health surveillance study.

  • Yue Zhou1
  • Yue Guo2
  • Yaojia Xiong1
  • Yan Zhu1
  • Xiaobo Huang1
  • Lele Li1
  • Yexun Gong1
  • ZhiMin Sun3
  • Yong Wang4
4 affiliations
  1. 1Department of Ophthalmology, Affiliated Nantong Clinical Collegeof Nantong University, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China.
  2. 2Ophthalmology Department, Eye & ENT Hospital, Fudan University, Shanghai, 200031, China.
  3. 3Department of Ophthalmology, Affiliated Nantong Clinical Collegeof Nantong University, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China. [email protected].
  4. 4Department of Ophthalmology, Affiliated Nantong Clinical Collegeof Nantong University, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China. [email protected].
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Abstract

Background

School health programmes often collect vision, growth and posture-screening data in the same children, but these streams are usually analysed separately. We examined whether trunk-rotation and posture-screening markers were associated with refractive anisometropia burden in school surveillance.Methods

This cross-sectional analysis used 2025 school health surveillance records from Nantong, China. The primary outcome was non-cycloplegic screening-defined refractive anisometropia, defined as an interocular spherical-equivalent difference of 1.00 dioptre (D) or greater. Primary posture-screening markers were maximum angle of trunk rotation (ATR), ATR thresholds and operationally defined inspection or movement-screening indicators. Adjusted prevalence ratios (aPRs) were estimated with modified Poisson regression adjusted for age, sex, body mass index and sampled school-class cluster fixed effects.Results

Among 2605 students, 713 (27.4%) had anisometropia of 1.00 D or greater. The main continuous marker, maximum ATR per 1 degree, was modestly associated with anisometropia (aPR 1.04, 95% CI 1.01 to 1.07). ATR of 7 degrees or greater showed a higher crude prevalence (40.0% versus 26.9%) and a directionally similar but less precise adjusted estimate (aPR 1.30, 95% CI 1.01 to 1.67). Broad myopia and axial-myopia markers showed little corresponding positive pattern. Secondary severity, school-stage and segment-direction analyses were descriptive and exploratory.Conclusions

Trunk-rotation and posture-screening markers were modestly associated with concurrent refractive anisometropia burden in school surveillance data. These findings support integrated analysis of school posture and vision screening data, but should not be interpreted as evidence of temporal order, causality, individual-level prediction, or posture-based ophthalmic referral.

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Cite

BibTeXRIS
BibTeX
@article{zhou2026trunkrotation,
  title = {{Trunk-rotation and posture-screening markers in relation to refractive anisometropia among schoolchildren in Nantong, China: a cross-sectional school health surveillance study.}},
  author = {Yue Zhou and Yue Guo and Yaojia Xiong and Yan Zhu and Xiaobo Huang and Lele Li and Yexun Gong and ZhiMin Sun and Yong Wang},
  journal = {BMC public health},
  year = {2026},
  month = jul,
  doi = {10.1186/s12889-026-28630-4},
  url = {https://europepmc.org/article/MED/42907794},
  note = {CC BY-NC-ND},
}
RIS
TY  - JOUR
TI  - Trunk-rotation and posture-screening markers in relation to refractive anisometropia among schoolchildren in Nantong, China: a cross-sectional school health surveillance study.
AU  - Yue Zhou
AU  - Yue Guo
AU  - Yaojia Xiong
AU  - Yan Zhu
AU  - Xiaobo Huang
AU  - Lele Li
AU  - Yexun Gong
AU  - ZhiMin Sun
AU  - Yong Wang
PY  - 2026
DA  - 2026/07/01
JO  - BMC public health
DO  - 10.1186/s12889-026-28630-4
UR  - https://europepmc.org/article/MED/42907794
AB  - Background  School health programmes often collect vision, growth and posture-screening data in the same children, but these streams are usually analysed separately. We examined whether trunk-rotation and posture-screening markers were associated with refractive anisometropia burden in school surveillance.Methods  This cross-sectional analysis used 2025 school health surveillance records from Nantong, China. The primary outcome was non-cycloplegic screening-defined refractive anisometropia, defined as an interocular spherical-equivalent difference of 1.00 dioptre (D) or greater. Primary posture-screening markers were maximum angle of trunk rotation (ATR), ATR thresholds and operationally defined inspection or movement-screening indicators. Adjusted prevalence ratios (aPRs) were estimated with modified Poisson regression adjusted for age, sex, body mass index and sampled school-class cluster fixed effects.Results  Among 2605 students, 713 (27.4%) had anisometropia of 1.00 D or greater. The main continuous marker, maximum ATR per 1 degree, was modestly associated with anisometropia (aPR 1.04, 95% CI 1.01 to 1.07). ATR of 7 degrees or greater showed a higher crude prevalence (40.0% versus 26.9%) and a directionally similar but less precise adjusted estimate (aPR 1.30, 95% CI 1.01 to 1.67). Broad myopia and axial-myopia markers showed little corresponding positive pattern. Secondary severity, school-stage and segment-direction analyses were descriptive and exploratory.Conclusions  Trunk-rotation and posture-screening markers were modestly associated with concurrent refractive anisometropia burden in school surveillance data. These findings support integrated analysis of school posture and vision screening data, but should not be interpreted as evidence of temporal order, causality, individual-level prediction, or posture-based ophthalmic referral.
SN  - 1471-2458
ER  -