Funding for this research was provided by:
National Natural Science Foundation of China (81570880)
National Basic Research Program of China (973 Program) (2016YFE0107000, 2016YFC0102500)
Key R & D Program Projects in Zhejiang Province (2019C03045)
Zhejiang Provincial Natural Science Foundation of China (LY19H120003)
Public Service Program of Wenzhou Science and Technology Bureau (Y20160151)
Text and Data Mining valid from 2019-08-01
Received: 23 February 2019
Accepted: 9 July 2019
First Online: 1 August 2019
Ethics approval and consent to participate
: This study had been approved by the ethics committee of the Eye Hospital of Wenzhou Medical University, and followed the tenets of the Declaration of Helsinki (KYK 2017 ).
: Not applicable.
: The authors declare that they have no competing interests.