The Claim
Each additional hour of time spent outdoors per week is associated with a 2% reduced odds of myopia in children and adolescents up to 20 years of age.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Children and adolescents who spend more time outdoors each week have a slightly lower chance of developing myopia.
See the scientific wording
Each additional hour of time spent outdoors per week is associated with a 2% reduced odds of myopia in children and adolescents up to 20 years of age, based on pooled data from seven cross-sectional studies adjusted for covariates, suggesting that increased outdoor exposure may contribute to lower myopia prevalence.
When children spend time outside, bright light hits their eyes and triggers the retina to release more dopamine. This dopamine stops the eyeball from growing too long, which keeps vision sharp and prevents nearsightedness.
What the research says
1 studyKids and teens who spend just one more hour outside each week are a little less likely to become nearsighted, and this study found that exact link using data from many other studies.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.