Received: 24 July 2020
Accepted: 10 February 2021
First Online: 18 February 2021
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of the Tilganga Institute of Ophthalmology (IRC-TIO Ref: 03/2014). Informed consent for this observational study was obtained from the participants.
: The participants consented for publication of their anonymised data along with the consent for participation in this observational study.
: No competing interests to declare.