Clinical Evaluation of Early Screening and Diagnostic Methods for Refractive Errors in Children  Xiaohong Zhu1, Lu Lu1, Mei Huang1, Guohui Xiong1, Bingqing Tian1, Xiaohui Fu1, Lijun Song2,*. 1, Department of Ophthalmology, Minda Hospital Affiliated to Hubei University for Nationalities, Enshi, Hubei, 445000,