Received: 3 June 2020
Accepted: 14 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: Committee on Human Research Publication and Ethics of the Kwame Nkrumah University of Science and Technology (KNUST) (CHRPE/AP/034/19). Permission was obtained from the Ghana Optometric Association. Written informed consent was obtained from all participants after explaining the objectives, nature, method and importance of the study to them.
: The authors declare that they have no competing interests.
: Not applicable.