An analysis of eight previous studies by University of Cambridge researchers found that for each additional hour spent outside per week, the risk of myopia reduced by 2%.
Exposure to natural light and time spent looking at distant objects could be key factors, they said.
The studies involved more than 10,000 children and adolescents.
How much outside time do your kids get? What about you? If you wear glasses did you spend a lot of time inside as a child?
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