NDLI: The increasing prevalence of myopia and high myopia among high school students in Fenghua city, eastern China: a 15-year population-based survey

Content Provider	Springer Nature : BioMed Central
Author	Chen, Min Wu, Aimin Zhang, Lina Wang, Wei Chen, Xinyi Yu, Xiaoning Wang, Kaijun
Abstract	Background Myopia is the leading cause of preventable blindness in children and young adults. Multiple epidemiological studies have confirmed a high prevalence of myopia in Asian countries. However, fewer longitudinal studies have been performed to evaluate the secular changes in the prevalence of myopia, especially high myopia in China. In the present study, we investigated trends in the prevalence of myopia among high school students in Fenghua city, eastern China, from 2001 to 2015. Methods This was a population-based, retrospective study. Data were collected among 43,858 third-year high school students. Noncycloplegic autorefraction was used to determine refractive error, which was defined as low myopia, moderate myopia, high myopia and very high myopia according to the spherical equivalent from the worse eye of each participant. The prevalence of myopia was calculated and the annual percentage change (APC) was used to quantify the time trends. All analyses were conducted using the SPSS, Stata and Graphpad Prism software. Results From 2001 to 2015, the prevalence of overall myopia increased from 79.5% to 87.7% (APC =0.59%), with a significant increase of moderate myopia (38.8% to 45.7%, APC = 0.78%), high myopia (7.9% to 16.6%, APC = 5.48%) and very high myopia (0.08% to 0.92%, APC = 14.59%), while the prevalence of low myopia decreased from 32.7% to 24.4% (APC = − 1.73%). High myopia and very high myopia contributed the major part of the increasing trend of myopia prevalence (contribution rate 27.00% and 69.07%, respectively). Conclusions During the 15-year period, there was a remarkable increase in the prevalence of high and very high myopia among high school students, which might become a serious public health problem in China for the next few decades.
Related Links	https://bmcophthalmol.biomedcentral.com/counter/pdf/10.1186/s12886-018-0829-8.pdf
Ending Page	10
Page Count	10
Starting Page	1
File Format	HTM / HTML
ISSN	14712415
DOI	10.1186/s12886-018-0829-8
Journal	BMC Ophthalmology
Issue Number	1
Volume Number	18
Language	English
Publisher	BioMed Central
Publisher Date	2018-07-03
Access Restriction	Open
Subject Keyword	Ophthalmology Epidemiology Myopia High myopia Prevalence High school student
Content Type	Text
Resource Type	Article
Subject	Ophthalmology
Journal Impact Factor	1.7/2023
5-Year Journal Impact Factor	2/2023

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