1. Discipline of Optometry, School of Health Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
2. Department of Optometry, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape-Coast, Cape-Coast, Ghana
3. Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana