Before revision: CEV was officially registered in 1997, and currently operates from the London School of Hygiene Tropical Medicine and is funded by the HSC Research and Development (R&D) Division of the Public Health Agency in Northern Ireland and National Eye Institute .
After revision: HistoryCEV was registered as a Cochrane group in 1997, and currently operates from the London School of Hygiene has an editorial base at the Centre for Public Health at Queen's University Belfast which is funded by the HSC Research and Development (R&D) Division of the Public Health Agency in Northern Ireland and .