Funding for this research was provided by:
Key R & D Program Projects in Zhejiang Province (2019C03045)
Zhejiang Provincial Natural Science Foundation of China (LY19H120003)
National Nature Science Foundation of China (81570880)
National Key Research and Development Program of China (2016YFC0102500, 2016YFE0107000)
Public Service Program of Wenzhou Science and Technology Bureau (Y20160151)
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.