Division of Ocular Injuries, Department of Ophthalmology, The Third Affiliated Hospital of Hebei Medical University , Shijiazhuang, Hebei, China. Hebei OPO Eye Bank, The Third Affiliated Hospital of Hebei Medical University , Shijiazhuang, Hebei, China. Department of Ophthalmology, Cangzhou Central Hospital , Cangzhou, Hebei, China.