Uncorrected vision is a huge problem in Chinese schools, with up to half of the students not having 20/20 vision. So a few years ago, Rural Education Action Program (REAP) -- a collaboration between universities in the US and China -- launched a project called Smart Focus to help uncorrected vision among students in rural China. The team collected research among these students and determined that better vision leads to better performance in school. So in 2015, Smart Focus began building vision centers in rural counties, providing students with free vision tests. For the students who failed the test, those from rural areas were given glasses for free, whereas those from more affluent areas would pay at-market or slightly below-market prices.

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