1. Department of Ophthalmology, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
2. Department of Ophthalmology, University of Ilorin Teaching Hospital, Ilorin, Kwara, Nigeria
3. Department of Ophthalmology, Calabar Children’s Eye Centre, University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria
4. Department of Paediatric Ophthalmology and Strabismus, National Eye Centre, Kaduna, Kaduna State, Nigeria