[1] Western Sydney University,Bathurst Rural Clinical School (BRCS), School of Medicine
[2] University of KwaZulu-Natal,African Vision Research Institute, Discipline of Optometry
[3] University of Cape Coast,Department of Optometry and Vision Science, School of Allied Health Sciences, College of Health and Allied Sciences
[4] University of Calabar,Health Education & Health Promotion Unit, Department of Public Health, Faculty of Allied Medical Sciences, College of Medical Sciences
[5] Kwame Nkrumah University of Science & Technology (KNUST),Department of Optometry and Visual Science, College of Science
[6] University of the Highlands and Islands,Department of Optometry, Centre for Health Sciences
[7] University of Calabar,Epidemiology and Biostatistics Unit, Department of Public Health
[8] Western Sydney University,School of Health Sciences
[9] Roberts Eyecare Associates,Department of Medicine, Dunedin School of Medicine
[10] University of Otago,Department of Optometry
[11] University of the Free State and Universitas Hospital,School of Optometry and Vision Science
[12] Koforidua Regional Hospital,undefined
[13] University of New South Wales,undefined