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| Study of the Prevalence and Characteristics of Myopia in School-Age Children in Jiaocheng County, Shanxi Province |
| Chunhui Li, Yan Gao, Chunfang Wang |
| Department of Ophthalmology, First Hospital of Shanxi Medical University, Taiyuan 030001, China |
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Abstract Objective: To understand the prevalence of myopia among school-age children in Jiaocheng county,
Shanxi province; to analyze its epidemic characteristics, and explore its possible influencing factors, so as
to provide a scientific basis for the establishment of a local, comprehensive myopia prevention and control
system. Methods: Cross-sectional investigation. In March 2019, a cluster random sampling method was
adopted to select students from 3 primary schools and 3 middle schools in Jiaocheng County (2 classes
in each grade) for visual acuity and refractive error examination. The developmental trend of myopia in
schoolchildren of different ages was compared by a Chi-square trend test, and the influencing factors were
analyzed by logistic regression. Results: A total of 3 927 school-age children, aged from 6 to 14 years old,
with an average age of 10.3±0.6 years, were investigated, and the male to female ratio was 1.13:1. The total
rate of poor vision and myopia was 76.24% and 80.14%, respectively. The detection rate of medium and
high myopia increased gradually with an increase in age (χ2
for trend=294.84, P<0.001). Logistic regression
analysis showed that female gender was a risk factor for myopia. For students aged 9-11 and 12-14, more
than 2 hours of homework was a risk factor for myopia. More than 2 hours of outdoor activities, adequate
sleep, and at least 2 or more eye health check-ups per year were protective factors for myopia. Conclusion:
The incidence of reduced visual acuity and myopia among school-age children in Jiaocheng county of
Shanxi province is at a higher level in China. It is necessary to take necessary measures of intervention as
soon as possible, build a comprehensive myopia prevention and control system, and raise an awareness of
myopia prevention and control among the entire population.
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Received: 16 August 2021
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Corresponding Authors:
Chunfang Wang, Department of Ophthalmology, First Hospital of Shanxi Medical University, Taiyuan 030001, China (Email: wsusan1966@163.com)
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