Associations Between Near Work, Outdoor Activity, and Myopia Among Adolescent Students in Rural China

Abstract
Uncorrected refractive error is the leading cause of visual disability among school-aged children of European,1,2South Asian,3and East Asian4,5descent. As a result, programs to improve children's access to glasses have become increasingly popular.6-8Recent reports have demonstrated, however, that rates of spectacles wearing may be low, even among children who have recently been provided free glasses.7Accuracy of the prescription in currently worn spectacles also appears to be an important problem in at least some parts of the world.9