Liu, Yuyan
Wu, Changlong
Wang, Ying
Dong, Yi
Liang, Dongqing
Xiao, Bo
Han, Quanhong
Chu, Yanhua
Article History
Received: 1 May 2019
Accepted: 3 December 2019
First Online: 21 December 2019
Ethics approval and consent to participate
: The study followed the tenets of the Declaration of Helsinki and was approved by the Medical Ethics Committee of Tianjin Eye Hospital. A written consent for participation was taken from each patient before the surgery.
: Not applicable.
: The authors declare that they have no competing interests.