Myopic axial elongation in school children and the COVID-19 lockdown in Russia: The Ural Children Myopia Study

To explore an influence of the COVID-19-related lockdown on ocular axial elongation in school children in Russia. The participants of the school-based Ufa Children Myopia Study in Ufa/Russia underwent, at baseline in 2019/2020 before the COVID-19 outbreak and after a COVID-19-related lockdown, a det...

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Bibliographic Details
Published in:PloS one 2023-01, Vol.18 (1), p.e0279020-e0279020
Main Authors: Bikbov, Mukharram M, Kazakbaeva, Gyulli M, Fakhretdinova, Albina A, Tuliakova, Azaliia M, Rakhimova, Ellina M, Panda-Jonas, Songhomitra, Gilemzianova, Leisan I, Garipova, Liana A, Khakimov, Dinar A, Jonas, Jost B
Format: Article
Language:English
Subjects:
Age
Axial Length, Eye
Biology and Life Sciences
Biometrics
Care and treatment
Child
Children
Cognitive ability
Communicable Disease Control
Coronaviruses
COVID-19
COVID-19 - epidemiology
Development and progression
Diabetic retinopathy
Elementary school students
Elongation
Eye
Female
Health aspects
Humans
Medicine and Health Sciences
Myopia
Myopia - epidemiology
Outbreaks
Pandemics
People and Places
Pregnancy
Questionnaires
Refraction, Ocular
Regression analysis
Russia - epidemiology
Schools
Shelter in place
Social aspects
Social Sciences
Vision disorders in children
Visual acuity
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Summary:To explore an influence of the COVID-19-related lockdown on ocular axial elongation in school children in Russia. The participants of the school-based Ufa Children Myopia Study in Ufa/Russia underwent, at baseline in 2019/2020 before the COVID-19 outbreak and after a COVID-19-related lockdown, a detailed interview and ophthalmological examination including laser interferometric biometry for axial length measurement. The study included 461 children (age:10.7±2.1 years;range:6.8-16.9 years). The mean follow-up was 1.41±0.33 years. Mean axial length at baseline was 23.96±0.95mm and 23.94±0.95mm in the right and left eyes, respectively. During the study period, annual axial elongation (right/left eyes) was 0.19±0.17mm/0.19±0.22mm. Before the COVID-19 lockdown, the age-dependent coefficient for axial length (ADCAL) for the right/left eyes was 0.21mm (95%CI:0.17,0.25)/0.20mm (95%CI:0.16,0.24). In children younger than 9.6 years (n = 157), annual axial elongation (right eyes) during the study period was larger than the ADCAL before the COVID-19 outbreak (0.29 mm (95%:0.00,0.66) versus 0.21 mm (95%CI:0.02,0.41)). In the groups aged 9.6 to 11.4 years (n = 148) and aged >11.4 years (n = 156), annual axial elongation during the study period was comparable to the ADCAL before the COVID-19 outbreak (0.18mm (95%CI:-0.07,0.46) versus 0.22mm (95%CI:-0.05,0.48), and (0.09mm (95%CI:-0.15,0.34) versus 0.14mm (95%CI:0.00,0.28), respectively). In children aged ≤9 years at study end, axial length at study end was 0.20 mm larger than axial length at baseline in the participants aged ≤9 years at baseline. Larger axial elongation during the study period was associated (multivariable analysis) with younger age (beta:-0.62;P
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0279020