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Article History

Received: 30 September 2021

Accepted: 7 July 2022

First Online: 19 July 2022

Declarations

:

: The study protocol follows the Declaration of Helsinki Ethical Principles for Medical Research Involving Human Subjects and it was approved by the Institutional Ethics Committee of ZOC, Sun Yat-sen University. This study based on electronic medical record system and does not contain any direct patient identifiers. So, the need for signed informed consent was waived by Zhongshan ophthalmic center ethics committee.

: Not applicable.

: The authors declare that they have no competing interests.