Visit COVID-19 resources

[Skip to Content]

The British Ophthalmological Surveillance Unit (BOSU)

Ophthalmic Surveillance Unit (BOSU) is  a system for national collection of data on rare and important disorders to support research, prevention and epidemiological assessment of ophthalmic disorders across the UK. The unit aims to facilitate research for the advancement of knowledge and improvement of the prevention and treatment of these disorders. Further benefits from our work are implications for service planning; allowing ophthalmologists to participate in peer-reviewed research and lessening the burden on reporting doctors of requests for data from numerous sources. We have also increased the awareness within both the ophthalmological community and the medical profession as a whole of the rare disorders studied; and where necessary we are positioned to respond rapidly to ophthalmic public health emergencies.

Since July 1997 the unit has continuously provided a unique resource supporting high quality epidemiological research and achieving a good publication record. We have supported over 65 different studies which have led to over 50 peer review papers, we receive consistently high levels of support and participation by UK ophthalmologists; and we continue to attract good quality applications for new studies.

Over 1300 reporting ophthalmologists participate in our active surveillance scheme. We use a methodology that has been tested in other specialties, both in the UK and internationally. We have supported surveillance for a wide range of conditions. However, rare disease surveillance is more than the systematic collection of data, the analysis and dissemination of that information to those who have contributed and all those who need to know remains an integral part of our mission. We have had great success at national and international conferences and details of all publications from BOSU studies can be are detailed in our Bibliography.

We typically have 7 or 8 conditions on the yellow card at any one time and we invite applications from ophthalmologists and others with a research interest in this area. Further information on suitable conditions and the application process can be found here.

Current Studies on the Yellow Card

Study Lead investigator Study Protocol
Hydroxychloroquine Retinopathy Imran Yusuf, Oxford HCQ Studycard final
Unexplained visual loss following removal of silicone oil Jonathan Smith, Sunderland Visual loss following ROSO studycard final
Fungal Keratitis Moshan Malik, London Fungal Keratitis Studycard Final
Chemical injuries Nicola Cronbach, Stoke Madeville SOCI studycard final
Retinal Dialysis Pallavi Tyagi, London Retinal Dialysis Studycard final

The British Ophthalmological Surveillance Unit Steering Committee

Name Hospital/ Institution Town/City Region
Professor J. Rahi  PhD. FRCOphth (Chair) Great Ormond Street/ Institute of Child Health London North Thames
Professor M. R. Stanford FRCS FRCOphth St Thomas’s Hospital London South Thames
Mr Nigel Davies FRCOphth St Thomas’s Hospital London South Thames
Mr David Lockington Tennent Institute of Ophthalmology Glasgow Scotland
Mr B. Foot BOSU, The Royal College of Ophthalmologists London
Mr C. Edelsten MA MRCP FRCOphth The Ipswich Hospital NHS Trust Ipswich Anglia and Oxford
Mr M Burdon MRCP FRCOphth Queen Elizabeth Hospital Birmingham


Birmingham West Midlands
Mr D Morris FRCOphth University Hospital of Wales Cardiff Wales
Miss G. Silvestri MD MRCP FRCSEd FRCOphth Royal Victoria Hospital, Belsfast Belfast Northern Ireland
Miss Cathy Williams FRCOphth Bristol Eye Hospital Bristol South West
Professor D Steel FRCOphth Sunderland Eye Infirmary Sunderland North East
Miss Rashmi Mathew FRCOphth Moorfields Eye Hospital


London North Thames
Mr Yun Wong FRCOphth The James Cook University Hospital Middlesbrough North East
Mr Harry Petruskin FRCOphth Moorfields Eye Hospital


London North Thames
Mr Mahi Muqit FRCOphth Moorfields Eye Hospital


London North Thames

Telephone 020 7935 0702 or use the contact form below.