Multifocal contact lenses and defocus incorporated multiple segments lenses slow myopic progression in Chinese children with high myopia Mengdi Li; Kailang Zhang; Bi Hua; Kevin T. Willeford; Xiaoqin Chen; Bin Zhang; Lihua Li; Xiaoyan Yang;

Prevalence of astigmatism among 99,515 children in different areas of Xi'an City, China Ye Zhang; Xiaokang He; Wei Dong; Zihao Wang; Chengfei Liu; Yanying Li; Zhaojiang Du;

Longitudinal change in central corneal thickness among primary schoolchildren Hassan Hashemi; Mehdi Khabazkhoob; Elham Azizi; Mohammad Hassan Emamian; Akbar Fotouhi;