1. Emergency Department, Dorset County Hospital, NHS Foundation Trust, Dorchester, UK
2. Anaesthesia Department, University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria
3. Department of Ophthalmology, Federal Medical Centre, Asaba, Nigeria
4. Department of Ophthalmology, Enugu State University of Technology Teaching Hospital, Parklane, Nigeria
5. Ophthalmology Department, University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria