Following publication of the original article [1], we have been notified that the Ethics approval and consent to participate declarations should be as follows:

The study was approved by the institutional review board of the L V Prasad Eye Institute (Ethics Ref. No. LEC-BHR-01–20–381). Written informed consent from all adult participants and legal guardians/parents for minors were obtained for the research study and publications.“Ethics approval and consent to participate” section on page no. 11 to be considered as stated above. However, the statement mentioned in the Ethics statement of Methods section on page no. 2 is correct.