Design, methodology, and baseline of whole city-million scale children and adolescents myopia survey (CAMS) in Wenzhou, China,Eye and Vision

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Design, methodology, and baseline of whole city-million scale children and adolescents myopia survey (CAMS) in Wenzhou, China
Eye and Vision ( IF 4.2 ) Pub Date : 2021-08-19 , DOI: 10.1186/s40662-021-00255-1
Liangde Xu _{1,

2,

3} , Youyuan Zhuang _{1,

3} , Guosi Zhang _{1,

3} , Yunlong Ma _{1,

3} , Jian Yuan _{1,

3} , Changseng Tu _{1,

4} , MiaoMiao Li _{1,

4} , Wencan Wang _{1,

3} , Yaru Zhang _{1,

3} , Xiaoyan Lu _{1,

3} , Jing Li _{1,

5} , Xinting Liu _{1,

2} , Zhengbo Xue _{1,

2} , Meng Zhou _{1,

3} , Jie Sun _{1,

3} , Jinhua Bao _{1,

2,

4} , Ming Li _{1,

2,

4} , Fan Lu _{1,

2,

4} , Hong Wang _{1,

3} , Jianzhong Su _{1,

2,

3} , Jia Qu _{1,

2,

4}

Affiliation

Myopia is the most common visual impairment in children and adolescents worldwide. This study described an economical and effective population-based screening pipeline and performed the project of a million scale children and adolescents myopia survey (CAMS), which will shed light on the further study of myopia from the level of epidemiology and precision medicine. We developed a novel population-based screening pattern, an intelligent screening process and internet-based information transmission and analysis system to carry out the survey consisting of school children in Wenzhou, China. The examination items include unaided distance visual acuity, presenting distance visual acuity, and non-cycloplegic autorefraction. Myopia and high myopia were defined as spherical equivalent (SE) ≤ − 1.00 diopters (D) and SE ≤ − 6.00 D, respectively. Next, the reports of the vision checking were automatically sent to parents and the related departments. The CAMS project will be done two to four times annually with the support of the government. An online eyesight status information management system (OESIMS) was developed to construct comprehensive and efficient electronic vision health records (EVHRs) for myopia information inquiry, risk pre-warning, and further study. The CAMS completed the first-round of screening within 30 days for 99.41% of Wenzhou students from districts and counties, in June 2019. A total of 1,060,925 participants were eligible for CAMS and 1,054,251 (99.37% participation rate) were selected through data quality control, which comprised 1305 schools, and 580,609, 251,050 and 170,967 elementary, middle, and high school students. The mean age of participants was 12.21 ± 3.32 years (6–20 years), the female-to-male ratio was 0.82. The prevalence of myopia in elementary, middle, and high school students was 38.16%, 77.52%, and 84.00%, respectively, and the high myopia incidence was 0.95%, 6.90%, and 12.98%. The CAMS standardized myopia screening model involves automating large-scale information collection, data transmission, data analysis and early warning, thereby supporting myopia prevention and control. The entire survey reduced 90% of staff, cost, and time consumption compared with previous surveys. This will provide new insights for decision support for public health intervention.

更新日期：2021-08-19

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