There is an alarming upward trend in myopia, a.k.a. nearsightedness, in the past several years. According to a recent research study, 60 years ago, only 10% to 20% of the Chinese population…
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There is an alarming upward trend in myopia, a.k.a. nearsightedness, in the past several years. According to a recent research study, 60 years ago, only 10% to 20% of the Chinese population…