Dose–Response Relationship of Outdoor Exposure and Myopia Indicators: A Systematic Review and Meta-Analysis of Various Research Methods

Autor: Ciao Lin Ho, Wei-Fong Wu, Yiing Mei Liou
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: International Journal of Environmental Research and Public Health
Volume 16
Issue 14
International Journal of Environmental Research and Public Health, Vol 16, Iss 14, p 2595 (2019)
ISSN: 1660-4601
DOI: 10.3390/ijerph16142595
Popis: Myopia in children has dramatically increased worldwide. A systematic review and meta-analysis were conducted to evaluate the effects of outdoor light exposure on myopia. According to research data from 13 studies of 15,081 children aged 4&ndash
14 at baseline, outdoor light exposure significantly reduced myopia incidence/prevalence (odds ratio [OR] = 0.85, 95% confidence interval [CI]: 0.80&ndash
0.91, p <
0.00001
I2 = 90%), spherical equivalent refractive error (SER) by 0.15 D/year (0.09&ndash
0.27, p <
0.0001), and axial elongation by 0.08 mm/year (&minus
0.14 to &minus
0.02, p = 0.02). The benefits of outdoor light exposure intervention, according to pooled overall results, included decreases in three myopia indicators: 50% in myopia incidence, 32.9% in SER, and 24.9% in axial elongation for individuals in Asia. Daily outdoor light exposure of more than 120 min was the most effective intervention, and weekly intervention time exhibited a dose&ndash
response relationship with all three indicators. Subgroup comparisons revealed that interventional studies report greater benefits from outdoor light exposure compared with cohort and cross-sectional studies, and individuals with myopia in intervention studies experienced slightly greater benefits than individuals without, in terms of SER and axial elongation. Therefore, this study suggests 120 min/day of outdoor light exposure at school.
Databáze: OpenAIRE