Age-Related Change of Axial Length, Spherical Equivalent, and Prevalence of Myopia and High Myopia in School-Age Children in Shanghai: 2014–2018
Joint Authors
Li, Tao
Jiang, Bo
Zhou, Xiaodong
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-12
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Purpose.
To investigate the age-related change of axial length (AL), spherical equivalent (SE), and prevalence of myopia and high myopia in children at 7–18-year-olds in Shanghai in 2014 and 2018, respectively.
Methods.
This was an observational study in Shanghai.
The same 3 schools were selected in 2014 and 2018, respectively.
AL, SE, prevalence of myopia and high myopia, height, and weight were measured.
A questionnaire regarding the lifestyles was completed.
Results.
Mean age was smaller in 2018 than in 2014 (P<0.001), and mean AL was shorter in 2018 than in 2014 (P=0.003), whereas mean SE was greater in 2018 than in 2014 (P<0.001).
The prevalence of myopia and high myopia was lower in 2018 than in 2014 (P<0.001 and P=0.013, respectively).
Mean AL increased with age from 7-year-olds to 18-year-olds in 2014 and 2018 (both P<0.001), respectively.
Mean SE decreased with age in 2014 and 2018 (both P<0.001), respectively.
The prevalence of myopia and high myopia increased with age in 2014 and 2018 (all P<0.001), respectively.
Less mean time outdoors and more mean time of study of all children were observed in 2018 than in 2014 (P=0.018 and P<0.001, respectively).
Conclusion.
This study shows normative growth values for AL and SE in Shanghai children at the age of 7–18-year-olds, as well as the age-specific prevalence of myopia and high myopia.
American Psychological Association (APA)
Li, Tao& Jiang, Bo& Zhou, Xiaodong. 2020. Age-Related Change of Axial Length, Spherical Equivalent, and Prevalence of Myopia and High Myopia in School-Age Children in Shanghai: 2014–2018. Journal of Ophthalmology،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1189389
Modern Language Association (MLA)
Li, Tao…[et al.]. Age-Related Change of Axial Length, Spherical Equivalent, and Prevalence of Myopia and High Myopia in School-Age Children in Shanghai: 2014–2018. Journal of Ophthalmology No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1189389
American Medical Association (AMA)
Li, Tao& Jiang, Bo& Zhou, Xiaodong. Age-Related Change of Axial Length, Spherical Equivalent, and Prevalence of Myopia and High Myopia in School-Age Children in Shanghai: 2014–2018. Journal of Ophthalmology. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1189389
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1189389