A comparative study of the prevalence of myopia and behavioral changes in primary school students
Abstract Objective To analyze the changes in the prevalence of myopia and its relation to ocular biological parameters, and behaviors among primary school students in China, and understand the prevention and control of myopia. Methods Cross-sectional surveys were performed on 7–9-year-old children i...
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| Format: | Article |
| Language: | English |
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BMC
2022-09-01
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| Series: | BMC Ophthalmology |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12886-022-02594-6 |
| _version_ | 1811267210354622464 |
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| author | Haishao Xiao Dandan Jiang Yanhui Wang Bing Sun Chunchun Li Yaoyao Lin Linjie Liu Xiaoqiong Huang Balamurali Vasudevan Yanyan Chen |
| author_facet | Haishao Xiao Dandan Jiang Yanhui Wang Bing Sun Chunchun Li Yaoyao Lin Linjie Liu Xiaoqiong Huang Balamurali Vasudevan Yanyan Chen |
| author_sort | Haishao Xiao |
| collection | DOAJ |
| description | Abstract Objective To analyze the changes in the prevalence of myopia and its relation to ocular biological parameters, and behaviors among primary school students in China, and understand the prevention and control of myopia. Methods Cross-sectional surveys were performed on 7–9-year-old children in the yrs. 2012 and 2019. In addition, spherical equivalent refraction (SER), axial length (AL), and AL/corneal radius ratio (AL/CR ratio) were collected without cycloplegia. Participants completed detailed questionnaires on behavior related to myopia. Results Data was collected on 623 children (8.02 ± 0.57 years old) in 2012 and 536 students in 2019 (8.09 ± 0.65 years old). The prevalence of myopia was 37.7% in 2012 and 39.9% in 2019. The SER was -0.25 (0.92) D in 2012 and -0.25 (1.25) in 2019. There was no statistical difference in the prevalence of myopia and SER over the 7 years (all P > 0.05). In 2019, the prevalence of myopia among girls demonstrated an increasing trend (33.8% vs. 37.8%), but there was no statistical difference (P > 0.05). The mean AL and AL/CR ratio of boys were decreasing (all P < 0.05). The proportion of children reading more than 2 h and using digital devices for more than 2 h per day after their classes in the 2019 group both decreased (all P < 0.05). However, the proportion of activities performed outdoors for more than 2 h./day decreased significantly (P = 0.001). Conclusion Compared with 2012, the prevalence of myopia in primary school students in 2019 was under control, which may be related to the improvement of children's near-work behavior, but there was the problem of insufficient outdoor activity time. In terms of ocular biological parameters, the risk of myopia for boys in 2019 was lower. |
| first_indexed | 2024-04-12T20:58:23Z |
| format | Article |
| id | doaj.art-c0b4c5906ac04ee5b6add9cb744db71f |
| institution | Directory Open Access Journal |
| issn | 1471-2415 |
| language | English |
| last_indexed | 2024-04-12T20:58:23Z |
| publishDate | 2022-09-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ophthalmology |
| spelling | doaj.art-c0b4c5906ac04ee5b6add9cb744db71f2022-12-22T03:16:55ZengBMCBMC Ophthalmology1471-24152022-09-012211810.1186/s12886-022-02594-6A comparative study of the prevalence of myopia and behavioral changes in primary school studentsHaishao Xiao0Dandan Jiang1Yanhui Wang2Bing Sun3Chunchun Li4Yaoyao Lin5Linjie Liu6Xiaoqiong Huang7Balamurali Vasudevan8Yanyan Chen9School of Optometry and Ophthalmology, Wenzhou Medical UniversityThe Eye Hospital, Wenzhou Medical UniversitySchool of Optometry and Ophthalmology, Wenzhou Medical UniversitySchool of Optometry and Ophthalmology, Wenzhou Medical UniversityThe Eye Hospital, Wenzhou Medical UniversityThe Eye Hospital, Wenzhou Medical UniversitySchool of Optometry and Ophthalmology, Wenzhou Medical UniversityThe Eye Hospital, Wenzhou Medical UniversityCollege of Optometry, Midwestern UniversityThe Eye Hospital, Wenzhou Medical UniversityAbstract Objective To analyze the changes in the prevalence of myopia and its relation to ocular biological parameters, and behaviors among primary school students in China, and understand the prevention and control of myopia. Methods Cross-sectional surveys were performed on 7–9-year-old children in the yrs. 2012 and 2019. In addition, spherical equivalent refraction (SER), axial length (AL), and AL/corneal radius ratio (AL/CR ratio) were collected without cycloplegia. Participants completed detailed questionnaires on behavior related to myopia. Results Data was collected on 623 children (8.02 ± 0.57 years old) in 2012 and 536 students in 2019 (8.09 ± 0.65 years old). The prevalence of myopia was 37.7% in 2012 and 39.9% in 2019. The SER was -0.25 (0.92) D in 2012 and -0.25 (1.25) in 2019. There was no statistical difference in the prevalence of myopia and SER over the 7 years (all P > 0.05). In 2019, the prevalence of myopia among girls demonstrated an increasing trend (33.8% vs. 37.8%), but there was no statistical difference (P > 0.05). The mean AL and AL/CR ratio of boys were decreasing (all P < 0.05). The proportion of children reading more than 2 h and using digital devices for more than 2 h per day after their classes in the 2019 group both decreased (all P < 0.05). However, the proportion of activities performed outdoors for more than 2 h./day decreased significantly (P = 0.001). Conclusion Compared with 2012, the prevalence of myopia in primary school students in 2019 was under control, which may be related to the improvement of children's near-work behavior, but there was the problem of insufficient outdoor activity time. In terms of ocular biological parameters, the risk of myopia for boys in 2019 was lower.https://doi.org/10.1186/s12886-022-02594-6Primary school childrenMyopia prevalenceOcular biological parametersBehaviors |
| spellingShingle | Haishao Xiao Dandan Jiang Yanhui Wang Bing Sun Chunchun Li Yaoyao Lin Linjie Liu Xiaoqiong Huang Balamurali Vasudevan Yanyan Chen A comparative study of the prevalence of myopia and behavioral changes in primary school students BMC Ophthalmology Primary school children Myopia prevalence Ocular biological parameters Behaviors |
| title | A comparative study of the prevalence of myopia and behavioral changes in primary school students |
| title_full | A comparative study of the prevalence of myopia and behavioral changes in primary school students |
| title_fullStr | A comparative study of the prevalence of myopia and behavioral changes in primary school students |
| title_full_unstemmed | A comparative study of the prevalence of myopia and behavioral changes in primary school students |
| title_short | A comparative study of the prevalence of myopia and behavioral changes in primary school students |
| title_sort | comparative study of the prevalence of myopia and behavioral changes in primary school students |
| topic | Primary school children Myopia prevalence Ocular biological parameters Behaviors |
| url | https://doi.org/10.1186/s12886-022-02594-6 |
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