Many people don’t see well
By Nathan Seppa
Vision screening of a broad sample of people in the United States ages 12 and older finds that 6.4 percent of them have substandard vision. That extrapolates to roughly 14 million people nationwide, National Institutes of Health (NIH) researchers report in the May 10 Journal of the American Medical Association.
Using mobile testing facilities throughout the country, scientists randomly offered people free vision tests. Some participants wore glasses or contact lenses; some didn’t. Overall, 13,265 people completed the test.