14 February 2022 : Original article
Degree of Myopia and Reduced Physical Activity in 3600 College Students in China
Xiangyu Zhao1ABCDEG, Yanan Zhang2ABCFG*DOI: 10.12659/MSMBR.934807
Med Sci Monit Basic Res 2022; 28:e934807
Figure 2 The distribution map of the level of college student’s eyesight in ball sports clubs in China. The inner and outer circles of the pie chart indicate the beginning and end of the school year, respectively. (A) Basketball clubs; (B) table tennis clubs.