Urban–rural differences in refractive status and visual behaviors among preschool children aged 3–6 years in Shunyi district, Beijing: a multidimensional analysis
To investigate urban–rural differences in refractive status among children aged 3–6 years in Shunyi District, Beijing, and their associations with daily visual behaviors, as well as to ascertain the relative contributions of familial risk and environmental factors in this population. A total of 1,142 childre...