Funding for this research was provided by:
National Natural Science Foundation of China (81670885)
Article History
Received: 24 September 2020
Accepted: 17 June 2021
First Online: 30 June 2021
Declarations
:
: All participants in this study provided consent to participate. The parents or guardians provided consent for participants under the age of 18. We explained the nature of the study to all patients and verbal informed consent was obtained prior to participation. The human ethics committee of the Zhongshan Ophthalmic Center of Sun Yat-sen University waived further processing, since the use of questionnaires within normal clinical practice does not, require formal approval, and only verbal consent is needed.Ethical approval was obtained from the human ethics committee of the Zhongshan Ophthalmic Center of Sun Yat-sen University, China (approval NO. 2020KYPJ068).
: Not Applicable.
: The authors declare that they have no competing interests.