1. University of Liverpool; Department of Health Services Research; Waterhouse Building (B211) 1-3 Brownlow Street Liverpool UK L69 3GL
2. London School of Hygiene & Tropical Medicine; Cochrane Eyes and Vision, ICEH; Keppel Street London UK WC1E 7HT
3. Aintree University Hospitals NHS Foundation Trust; Department of Ophthalmology; Lower Lane Liverpool UK L9 7AL
4. University of Liverpool; Biostatistics; Block F, Waterhouse Bld 1-5 Brownlow Street Liverpool UK L69 3GL
5. Oxford University Hospitals NHS Trust; Orthoptics; Oxford Eye Hospital, John Radcliffe Hospital, Headley Way Oxford UK OX3 9DU
6. Salford Royal NHS Foundation Trust; Orthoptics; Stott Lane Salford Manchester UK M6 8HD
7. University of Liverpool; Occupational Therapy; Brownlow Hill Liverpool UK L69 3GB
8. Warrington and Halton Hospitals NHS Foundation Trust; Department of Orthoptics; Lovely Lane Warrington UK WA5 2QQ
9. Pennine Care NHS Foundation Trust; Community Eye Service; 225 Old Street Ashton-under-Lyne UK OL6 7SR
10. Frimley Park NHS Foundation Trust; Orthoptics; Portsmouth Road Frimley Surrey UK GU16 7UJ
11. Newcastle University; Institute of Neuroscience; Newcastle UK NE2 4HH