A debatable fix for young eyes

Myopia has become something of a minor epidemic: More than 40 percent of Americans are nearsighted, a 16 percent increase since the 1970s. People with so-called high myopia — generally, blurry vision beyond about five inches — face an increased likelihood of developing cataracts and glaucoma, are at higher risk for retinal detachments that can result in blindness. Exactly what is causing the nationwide rise in nearsightedness is not known. David G. Hunter, professor of ophthalmology at Boston Children’s Hospital, is quoted.

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