Myopia is increasing

Michael Kennedy writes in Chicago Boyz about myopia.

In the U.S., the rate of nearsightedness in people 12 to 54 years old increased by nearly two-thirds between studies nearly three decades apart ending in 2004, to an estimated 41.6%, according to a National Eye Institute study.

But Asians with their focus on education are the most effected.

A full 80% of 4,798 Beijing teenagers tested as nearsighted in a study published in the journal PLOS One in March. Similar numbers plague teens in Singapore and Taiwan. In one 2012 survey in Seoul, nearly all of the 24,000 teenage males surveyed were nearsighted.

Why myopia rates have soared isn’t entirely clear, but one factor that keeps cropping up in research is how much time children spend outdoors. The longer they’re outside, the less likely they are to become nearsighted, according to more than a dozen studies in various countries world-wide.

Read more here.