Nearsightedness — the ability to see close objects more clearly than those far away — now affects about 50 percent of young adults in the United States and Europe. This is double the prevalence of half a century ago. In …
Read More »Nearsightedness — the ability to see close objects more clearly than those far away — now affects about 50 percent of young adults in the United States and Europe. This is double the prevalence of half a century ago. In …
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