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ORIGINAL RESEARCH article
Front. Med.
Sec. Ophthalmology
Volume 12 - 2025 | doi: 10.3389/fmed.2025.1571470
Comparison of spherical equivalent and estimated prevalence of myopia in school-age children between Shanghai and Yunnan in China
Provisionally accepted- 1Jinshan Hospital, Fudan University, Shanghai, China
- 2Zhenyuan People's Hospital, Zhenyuan county, China
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The purpose of this study was to compare spherical equivalent (SE) and estimated prevalence of myopia in school-age children between Shanghai and Yunnan in China, and to investigate the differences in SE and estimated prevalence of myopia between Han ethnicity and ethnic minorities in Yunnan.This was an observational study, which enrolled one primary school and one junior high school in Shanghai, and two primary schools and two junior high schools in Yunnan in 2021. Refraction was measured using autorefractors without cycloplegia. Pearson correlation analysis, Chi-square test and multiple linear regression (MLR) were used for analysis.Results: A total of 2744 children in Shanghai and 1769 children in Yunnan were examined, respectively. Less hyperopic SE was observed in Grades 1 and 2 in Shanghai compared to Yunnan (both P < 0.001). No significant difference in median SE between Han ethnicity and ethnic minorities in Yunnan was found in each grade (all P > 0.05). The estimated prevalence of myopia in Grades 1 (13.3% vs. 2.6%, P < 0.001) and 2 (16.1% vs. 7.6%, P = 0.003) were higher in Shanghai than in Yunnan, whereas the estimated prevalence of myopia of in Grade 7 (52.0% vs. 68.1%, P = 0.042) was lower in Han ethnicity than in ethnic minorities in Yunnan. MLR showed that the coefficient for age was -0.3351 (p <0.001).Yunnan are similar to Shanghai. Furthermore, a similar situation exists between Han ethnicity and ethnic minorities.
Keywords: spherical equivalent, Myopia prevalence, Han ethnicity, ethnic minority, Children
Received: 05 Feb 2025; Accepted: 18 Apr 2025.
Copyright: © 2025 Li, Liu and Zhou. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Xiandong Liu, Zhenyuan People's Hospital, Zhenyuan county, China
Xiaodong Zhou, Jinshan Hospital, Fudan University, Shanghai, China
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