The Claim
Each additional hour of outdoor time per day is associated with a 13% reduction in the odds of myopia in children and adolescents.
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 one more hour outdoors each day have a 13% lower chance of developing myopia compared to those who spend less time outdoors.
See the scientific wording
Each additional hour of outdoor time per day is associated with a 13% reduced odds of myopia in children and adolescents, derived from the weekly estimate of 2% per hour, suggesting a dose-response relationship between outdoor exposure and myopia risk.
When children spend more time outside, bright sunlight hits their eyes and causes the retina to release more dopamine. This dopamine signals the eye to stop growing too long, which keeps the focus of light exactly on the retina instead of in front of it, preventing nearsightedness.
What the research says
1 studySpending more time outside each day is linked to a lower chance of becoming nearsighted, and this study confirms that each extra hour outside per day reduces the risk by about 13%, based on scaling up weekly data.
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.