, Columnist
Kids Worldwide Spend Less Time Outdoors, and Then Need Glasses
One factor associated with higher rates of myopia turns out to be education. The rise is especially stark in Asia.
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Eyeglass sales are expected to double globally between 2012 and 2026, and the amount of time people are spending indoors may be a leading cause. The reason? An explosion in nearsightedness, especially in Asia, which may be linked to lack of sun exposure.
In the 1950s, roughly 20 to 30 percent of 20-year-olds in Hong Kong, Taiwan and South Korea suffered from myopia. Today, the shares are above 80 percent. In the U.S., the increases have been significant though a bit less dramatic. In the early 1970s, 24 percent of 25- to 34-year-olds were nearsighted. By the early 2000s, that share had almost doubled, to 44 percent.