Study finds myopia has a wealth gap

A study involving 20,000 children in China shows disadvantaged children are far less likely to suffer myopia than their wealthier peers.

The condition is twice as prevalent in the middle-income province of Shaanxi - where students have greater access to books that require close-up focusing - compared with the poorer neighbouring province of Gansu.

Nearly 23% of youths in Shaanxi have clinically significant myopia, nearly twice that of the lower-income province of Gansu, which has a 12.7% prevalence rate.