"Nearsightedness among Americans has increased quite a bit over the past few decades, but it's nothing compared to the spike in Asia. In a recent study, "80% of 4,798 Beijing teenagers tested as nearsighted." While researchers can't be sure exactly what's causing the change, they have found at least one treatment that seems to help. Going outdoors more."The Puzzling Rise in Nearsighted Children - WSJ.
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