Department of Ophtalmology the First Affiliated Hospital of Xi''an Jiaotong University Xi''an 710061 Shaanxi Province China;
Affiliated Eye Hospital of Nanchang University Nanchang 330006 Jiangxi Provnice China;
Department of Ophtalmology the First Affiliated Hospital of Xi''an Jiaotong University Xi''an 710061 Shaanxi Province China;
Department of Ophtalmology the First Affiliated Hospital of Xi''an Jiaotong University Xi''an 710061 Shaanxi Province China;
Department of Ophthalmology Shaanxi People''s Hospital Xi''an 710068 Shaanxi Province China;
Department of Ophtalmology the First Affiliated Hospital of Xi''an Jiaotong University Xi''an 710061 Shaanxi Province China;
Department of Ophtalmology the First Affiliated Hospital of Xi''an Jiaotong University Xi''an 710061 Shaanxi Province China;
chopping in cataract; simulator; wet-lab;