1. College of Health Sciences, University of Jos , Nigeria
2. Sightsavers , Abuja , Nigeria
3. Department of Entomology, Center for Infectious Disease Dynamics. The Pennsylvania State University
4. Michael Dejene , Sightsavers, Addis Ababa , Ethiopia
5. Sightsavers , Haywards Heath . United Kingdom
6. Kilimanjaro Center for Community Ophthalmology , Moshi , Tanzania