Department of  Ophtholmology， the First Hospital of Shijiazhuang City， Hebei Province， Shijiazhuang 050011, China
ZHAO Xian， LIU Jie， SHAO Lijing， ZUO Jianxia
Journal of Hebei Medical University . 2016, (7): 802 -805 .  DOI: 10.3969/j.issn.10073205.2016.07.015