Refraction and Ocular Biometry of Preschool Children in Shanghai, China
Purpose. To investigate the refraction and ocular biometry characteristics and to examine the prevalence of refractive errors in preschool children aged 3 to 6 years in Shanghai, China. Methods. A school-based cross-sectional study was conducted in Jiading and Xuhui District, Shanghai, in 2013. We r...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Ophthalmology |
| Online Access: | http://dx.doi.org/10.1155/2018/5205946 |
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| author | Luoli Zhang Xiangui He Xiaomei Qu Xiaofang You Bingjie Wang Huijing Shi Hui Tan Haidong Zou Jianfeng Zhu |
| author_facet | Luoli Zhang Xiangui He Xiaomei Qu Xiaofang You Bingjie Wang Huijing Shi Hui Tan Haidong Zou Jianfeng Zhu |
| author_sort | Luoli Zhang |
| collection | DOAJ |
| description | Purpose. To investigate the refraction and ocular biometry characteristics and to examine the prevalence of refractive errors in preschool children aged 3 to 6 years in Shanghai, China. Methods. A school-based cross-sectional study was conducted in Jiading and Xuhui District, Shanghai, in 2013. We randomly selected 7 kindergartens in Jiading District and 10 kindergartens in Xuhui District, with a probability proportionate to size. The children underwent comprehensive eye examinations, including cycloplegic refraction and biometric measurements. Myopia, hyperopia, astigmatism were defined as spherical equivalent (SE) ≤ −0.50 D, SE ≥ +2.00 D, and cylindrical diopters ≤ −1.00 D. Results. The mean SE for 3- to 6-year-old children was +1.20 D (standard deviation [SD] 1.05), and the mean axial length (AL) was 22.29 mm (SD 0.73). The overall prevalence of myopia and astigmatism was 3.7% and 18.3%, respectively. No difference in prevalence of astigmatism was found across age groups. There was a statistically significant association between lower cylindrical diopters and higher spherical diopters (Spearman’s correlation: −0.21, P<0.001). Conclusion. Chinese children aged 3 to 6 years in the Shanghai area were mostly mildly hyperopic, with a low prevalence of myopia. Refractive astigmatism for children may be relatively stable throughout the preschool stage. Astigmatism was significantly associated with refractive error. |
| format | Article |
| id | doaj-art-e35f090a831f48d9afb4128f6cf4ac86 |
| institution | Kabale University |
| issn | 2090-004X 2090-0058 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Ophthalmology |
| spelling | doaj-art-e35f090a831f48d9afb4128f6cf4ac862025-02-03T06:01:33ZengWileyJournal of Ophthalmology2090-004X2090-00582018-01-01201810.1155/2018/52059465205946Refraction and Ocular Biometry of Preschool Children in Shanghai, ChinaLuoli Zhang0Xiangui He1Xiaomei Qu2Xiaofang You3Bingjie Wang4Huijing Shi5Hui Tan6Haidong Zou7Jianfeng Zhu8Eye & ENT Hospital, Fudan University, Shanghai, ChinaDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, ChinaEye & ENT Hospital, Fudan University, Shanghai, ChinaDepartment of Maternal and Child Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, ChinaEye & ENT Hospital, Fudan University, Shanghai, ChinaDepartment of Maternal and Child Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, ChinaDepartment of Maternal and Child Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, ChinaDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, ChinaDepartment of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, ChinaPurpose. To investigate the refraction and ocular biometry characteristics and to examine the prevalence of refractive errors in preschool children aged 3 to 6 years in Shanghai, China. Methods. A school-based cross-sectional study was conducted in Jiading and Xuhui District, Shanghai, in 2013. We randomly selected 7 kindergartens in Jiading District and 10 kindergartens in Xuhui District, with a probability proportionate to size. The children underwent comprehensive eye examinations, including cycloplegic refraction and biometric measurements. Myopia, hyperopia, astigmatism were defined as spherical equivalent (SE) ≤ −0.50 D, SE ≥ +2.00 D, and cylindrical diopters ≤ −1.00 D. Results. The mean SE for 3- to 6-year-old children was +1.20 D (standard deviation [SD] 1.05), and the mean axial length (AL) was 22.29 mm (SD 0.73). The overall prevalence of myopia and astigmatism was 3.7% and 18.3%, respectively. No difference in prevalence of astigmatism was found across age groups. There was a statistically significant association between lower cylindrical diopters and higher spherical diopters (Spearman’s correlation: −0.21, P<0.001). Conclusion. Chinese children aged 3 to 6 years in the Shanghai area were mostly mildly hyperopic, with a low prevalence of myopia. Refractive astigmatism for children may be relatively stable throughout the preschool stage. Astigmatism was significantly associated with refractive error.http://dx.doi.org/10.1155/2018/5205946 |
| spellingShingle | Luoli Zhang Xiangui He Xiaomei Qu Xiaofang You Bingjie Wang Huijing Shi Hui Tan Haidong Zou Jianfeng Zhu Refraction and Ocular Biometry of Preschool Children in Shanghai, China Journal of Ophthalmology |
| title | Refraction and Ocular Biometry of Preschool Children in Shanghai, China |
| title_full | Refraction and Ocular Biometry of Preschool Children in Shanghai, China |
| title_fullStr | Refraction and Ocular Biometry of Preschool Children in Shanghai, China |
| title_full_unstemmed | Refraction and Ocular Biometry of Preschool Children in Shanghai, China |
| title_short | Refraction and Ocular Biometry of Preschool Children in Shanghai, China |
| title_sort | refraction and ocular biometry of preschool children in shanghai china |
| url | http://dx.doi.org/10.1155/2018/5205946 |
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