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Complex Interplay Between COVID-19 Lockdown and Myopic Progression
Tao Cai1,2,3, Lianghui Zhao2,3, Ling Kong2,3
1Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.
Insights
The COVID-19 pandemic significantly increased myopia progression in children by 35% due to reduced outdoor time and increased screen use. Factors like heredity and close work exacerbated this, while rest and sleep offered protection.
Area of Science:
- Ophthalmology
- Public Health
- Pediatrics
Background:
- Myopic progression is a growing concern in children.
- The coronavirus disease 2019 (COVID-19) pandemic led to widespread home confinement, altering lifestyle factors.
- Understanding the impact of these changes on pediatric myopia is crucial.
Purpose of the Study:
- To compare myopic progression in children before and during COVID-19 home confinement.
- To identify factors influencing myopia progression during this period.
Main Methods:
- A cross-sectional study involving 115 myopic children.
- Compared axial length and refractive errors before and after 3 months of strict home confinement.
- Utilized questionnaires and visual function tests to assess influencing factors.
Main Results:
- Monthly axial elongation increased by 35% during confinement (0.046 vs. 0.033 mm/month).
- Severe asthenopia doubled during confinement.
- Heredity, close indoor work, and screen time were risk factors; age, rest, sleep, and viewing distance were protective.
Conclusions:
- COVID-19 home confinement accelerated myopia progression by approximately one-third.
- Reduced outdoor activities and increased digital screen exposure are key drivers.
- Lifestyle modifications are essential for managing pediatric myopia during pandemics.
Purpose:
To compare the myopic progression before and during strict home confinement when coronavirus disease 2019 (COVID-19) outbreak and explore the potential influencing factors.
Methods:
A cross-sectional study. One hundred and fifteen myopic children (115 right eyes) who replace their frame-glasses from December 2019 to January 2020 and with complete refractive records in our hospital since myopia were involved in the study. At the beginning of the strict home confinement and after a 3-month strict home confinement during the COVID-19 pandemic, they were invited to our hospital to examine the axial length and refractive errors. And visual functions, convergence insufficiency symptom survey (CISS) scale and questionnaires were also performed. Besides, the axial length and refractive errors before the COVID-19 were got from outpatient case files. The effect of strict home confinement on myopia was assessed by comparing monthly axial elongation before COVID-19 and during strict home confinement. Spearman correlation analysis was performed to explore the correlation between potential influencing factors and myopia progression.
Results:
Axial length's monthly elongation during strict home confinement was 35% higher than normal periods (0.046 vs. 0.033 mm/month, P = 0.003). The proportion of severe asthenopia doubled (P = 0.020). For myopia progression, heredity, close indoor work time and electronic products were risk factors. Besides, the protective factors were age, rest time after continuous eye usage, sleep time and distance from eye to computer screen.
Conclusions:
During COVID-19, the decline in outdoor activities and increase of exposure time to digital screens accelerated the progression of myopia by 1/3.
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