Received: 20 December 2019
Accepted: 19 August 2020
First Online: 10 September 2020
Ethics approval and consent to participate
: All research methods are in accordance with the tenets of the Declaration of Helsinki and approved by the by the Ethics Committee of the Eye Hospital of Wenzhou Medical University (ID: Y-2015003). All subjects that were recruited voluntarily were informed about the purpose, method, and potential risks of the study. A signed consent form was obtained from each volunteer.
: All study subjects gave informant consent.
: All authors of the manuscript have no proprietary interest in any materials or methods described within this article.