Article History
Received: 24 January 2021
Revised: 10 May 2021
Accepted: 10 June 2021
First Online: 1 July 2021
Competing interests
: Kong Yu Xiang George receives continuing medical education funding from Allergan as part of the International Glaucoma Panel programme. Kong Yu Xiang George also act as a medical consultant for Allergan/Abbvie (China). Young Chung and Ghee Soon Ang have no conflicts of interest to disclose in relation to this study.