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| Progression of Juvenile Myopia and Its Related Factors |
| Meng An2, Xiaoyan Sun1, Chengye Che1, Dabo Wang1, Jintao Sun1 |
| 1Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
2Department of Ophthalmology, Qingdao Traditional Chinese Medical Hospital of Huangdao District,Qingdao 266500, China |
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Abstract Objective: To investigate juvenile myopia progression and analyze its related factors. Methods: Longitudinal investigation and research. Six grades from a primary school (grade 3 to grade 6) and a middle school (grade 7 and grade 8) in Huangdao District of Qingdao were selected by random sampling, of which two classes were selected for each grade. A total of 320 myopic students were included in the study. During the winter vacation in January 2018, all the selected students' naked eye far vision, autorefraction, slit-lamp microscope, cycloplegic refraction and best corrected visual acuity examination were completed and baseline data were obtained. One year later, during the winter vacation in January 2019, the above examinations were repeated again to obtain follow-up data, and the relevant information of the affected factors including near work time, outdoor activities time and so on was obtained through on
site questionnaire. All the data were statistically analyzed by ANOVA, χ2 test and logistic univariate and multivariate regression analysis. Results: A total of 296 (92.5%) students' complete data were obtained. One year later, the average increase of spherical equivalent (SE) in all students was about (-0.56±0.62)D
(t=7.71, P<0.001), and the myopia progression in grade 6 was the fastest (P<0.001). There was no significant difference in the myopia progression between boys and girls. Among the selected myopic students, the proportion of two myopic parent was the highest, followed by one myopic parent, and no myopic parent was the lowest (χ2 =27.92, P<0.001). In univariate analysis, myopia progression was statistically correlated with two myopic parent[odds ratio (OR)=1.68, 95% confidence interval (CI): 1.22-2.13, P=0.042], near work distance <30 cm (OR=1.23, 95% CI: 1.02-1.59, P<0.001), continuous near work ≥ 30 min (OR=1.34, 95% CI: 1.02-1.61, P=0.021). However, in multivariate models, only continuous near work ≥ 30 min was significantly associated with myopia progression (OR=1.28, 95% CI: 1.08-1.68, P=0.042). Conclusions: The SE in all students increased by an average of (-0.56±0.62)D in one year. The progression of myopia in all grades showed a law of fast first and then slow. Among them, the sixth grade (13 years old) might be a turning point for the slow progression of myopia. Continuous near work time was an important risk factor for the progression of myopia.
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Received: 03 March 2022
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Corresponding Authors:
Jintao Sun, Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao 266003, China (Email: clrssjt998@163.com)
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. [J]. Chinese Journal of Optometry Ophthalmology and Visual science, 2023, 25(8): 0-. |
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