... Refractive Errors in Suburban School-age Children Lian-Hong Pi1, Lin Chen1, Qin Liu1, Ning Ke1, Jing Fang1, Shu Zhang1, Jun Xiao1, Wei-Jiang Ye1, Yan Xiong1, Hui Shi1, Zheng-Qin Yin 2 1. Department ... presented in this report. The distribu-tions of refractive status were further analyzed by dividing the children into three age groups: 6-8 -year-old (Grades 1-3 ), 9-1 2-year-old (Grades 4-6 ), ... (A) children in 6-8 -year-old group (n=891), (B) 9-1 2-year-old group (n=1315), and (C) 1 3-1 5-ye ar -old group (n=864). Values on the x-axis represent spherical equivalent diopter. The interval of...