ArticlePloS one2022
The change of myopic prevalence in children and adolescents before and after COVID-19 pandemic in Suqian, China.
Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 3 of them syntheses that pooled it.
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15 citing papers in PubMed, 3 syntheses or guidelines pooled it, 27 citations in OpenAlex.
- A systematic review: Virtual-reality-based techniques for human exercises and health improvement.Frontiers in public health · 2023Pooled it
- Paediatric myopia shift during the COVID-19 pandemic home quarantine: a systematic review and meta-analysis.BMJ paediatrics open · 2022Pooled it
- Regional variations and temporal trends of childhood myopia prevalence in Africa: A systematic review and meta-analysis.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2022Pooled it
- Induction of lipid A modification genes inJournal of medical microbiology · 2025Article
- Increasing myopia in Scotland at age of 3.5-5.5 years: A retrospective epidemiological study.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2025Article
- Comparison of the performance of myopia control in European children and adolescents with defocus incorporated multiple segments (DIMS) and highly aspherical lenslets (HAL) spectacles.BMJ paediatrics open · 2024Article
- Analysis of the spatio-temporal evolutionary characteristics of myopia among students aged 7-18 years in China: based on panel data analysis.Scientific reports · 2024Article
- Association of n-3 polyunsaturated fatty acid intakes with juvenile myopia: A cross-sectional study based on the NHANES database.Frontiers in pediatrics · 2023Article
- Myopic axial elongation in school children and the COVID-19 lockdown in Russia: The Ural Children Myopia Study.PloS one · 2023Article
- Prevalence of myopia among senior students in Fenghua, Eastern China, before and during the COVID-19 pandemic.Frontiers in public health · 2023Article
- Myopia among children and adolescents: an epidemiological study in Fuzhou City.Frontiers in pediatrics · 2023Article
- Trends of myopia development among primary and junior school students in the post-COVID-19 epidemic period.Frontiers in public health · 2022Article
- Prevalence of myopia: A large-scale population-based study among children and adolescents in weifang, china.Frontiers in public health · 2022Article
- Effect of Atropine Eye Drops Combined with VR-Based Binocular Visual Function Balance Training for Prevention and Control of Juvenile Myopia.Evidence-based complementary and alternative medicine : eCAM · 2022Article
- Impact of the coronavirus disease 2019 pandemic on the progression, prevalence, and incidence of myopia: A systematic review.Taiwan journal of ophthalmologyReview
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe aim of this study was to investigate the change of myopic prevalence in students with different demographic characteristics before and after the COVID-19 pandemic in Suqian, China.
methodsA retrospective, cross-sectional study was conducted. Student data from 52 schools in 2019 and 2020 were collected from the electronic medical records database through cluster sampling. Ophthalmic examinations were conducted on students from September to December in 2019 and 2020. Measurements of uncorrected visual acuity (UCVA) and noncycloplegic autorefraction were included to obtain the spherical equivalent refraction (SER) and prevalence of myopia. The difference in the rate of myopia and SER of students ages 6 to 18 with various demographic characteristics was compared between the two years.
resultsRecords from 118,479 students in 2019 and the 121,881 students in 2020 were obtained. In 2019 and 2020, the prevalence of overall myopia increased from 43.1% to 48.9% (5.8 percentage point), and a substantial shift in myopic rate occurred in grades 4 to 6 (6.9 percentage point). The change in the prevalence of myopia in girls (5.9 percentage point) was approximately equal to that in boys (5.8 percentage point) and it was more common in rural students (5.9 percentage point) than in urban students (5.1 percentage point). The prevalence of low myopia increased more in children, and the prevalence of moderate myopia increased more in adolescents. The mean spherical equivalent refraction (SER) (-1.34±2.03 D) was lower in 2020 than in 2019 (-1.16±1.92 D), while SER decreased mainly at ages 7 to 15. The SER presented myopic status at the age of 9 (-0.55±1.26 D in 2019, -0.71±1.42 D in 2020), and attained moderate myopia at the age of 15 (-3.06±2.41 D in 2019, -3.22±2.40 D in 2020).
conclusionsAfter the COVID-19 pandemic, myopia increased in this population with variable rates of increase in different demographic groups. The change of myopia in children was comparatively greater than that in adolescents. Therefore, we should take measures to prevent and control the development of myopia after the COVID-19 pandemic, especially for younger students.
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