Why do so many Chinese people need glasses?

A significant number of Chinese people need glasses due to a combination of genetic predisposition, lifestyle factors, and increased screen time. The rapid urbanization and educational pressures in China have led to more children and adults spending long hours on digital devices and studying, which can contribute to vision problems like myopia (nearsightedness). Additionally, limited outdoor activity, which is known to help reduce the risk of developing myopia, further exacerbates this issue. Consequently, these factors have resulted in a high prevalence of refractive errors among the population.