About the Authors

Khumbo Kalua

khumbokalua@yahoo.com

Affiliations Department of Ophthalmology, College of Medicine, University of Malawi, Blantyre, Malawi, International Centre for Eye Health, London School of Hygiene and Tropical Medicine, London, United Kingdom

Robert Lindfield

Affiliation International Centre for Eye Health, London School of Hygiene and Tropical Medicine, London, United Kingdom

Maxwell Mtupanyama

Affiliation Ministry of Health, Chiradzulu District Hospital, Chiradzulu, Malawi

Davie Mtumodzi

Affiliation Ministry of Health, Thyolo District Hospital, Thyolo, Malawi

Vincent Msiska

Affiliation Ministry of Health, Mzuzu Central Hospital, Mzuzu, Malawi

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KK RL. Performed the experiments: KK MM DM VM. Analyzed the data: KK. Contributed reagents/materials/analysis tools: KK RL. Wrote the paper: KK RL.