Children should be encouraged to spend time outdoors to reduce their risk of becoming shortsighted, experts have said.

Shortsightedness is rising around the world, with the condition said to have reached epidemic proportions in east Asia: estimates suggest about 90% of teenagers and young adults in China have the condition.https://www.theguardian.com/science/2018/nov/06/children-urged-play-outdoors-cut-risk-shortsightedness

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