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;

Practice of orthokeratology in Algeria: a retrospective study Mhamed Ouzzani; Moatez Billah Mekki; Selma Chiali; Fatiha Kail; Larbi Chahed;

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