I'm a postdoc research officer in the Diabetes Research Unit Cymru.  My main area of research is Diabetic Retinopathy.  I am interested in improving screening services for diabetic retinopathy within the NHS by exploring new technologies and cost effective changes.  My PhD explored the optimal screening intervals for diabetic retinopathy using data from the Diabetic Eye Service Wales (DESW) using parametric survival analysis.  I also have experience of using large linked databases through the Secure Anonymised information linkage (SAIL) gateway.  I am a member of the diabetic retinopathy research and development group (RDG) who consider access requests for DESW data for research.  Additionally I have been involved in the setup and development of diabetic retinopathy screening programmes in countries such as Mauritius, Trinidad and Bermuda.


  1. Thomas, R., Luzio, S., North, R., Banerjee, S., Zekite, A., Bunce, C., Owens, D., Thomas, B. Retrospective analysis of newly recorded certifications of visual impairment due to diabetic retinopathy in Wales during 2007–2015 BMJ Open 7 7 e015024
  2. Roy Chowdhury, S., Thomas, R., Dunseath, G., Peter, R., Rees, D., North, R., Luzio, S., Owens, D., Thomas, B. Diabetic Retinopathy in Newly Diagnosed Subjects With Type 2 Diabetes Mellitus: Contribution of β-Cell Function The Journal of Clinical Endocrinology & Metabolism 101 2 572 580
  3. Thomas, R., Dunstan, F., Luzio, S., Chowdhury, S., North, R., Hale, S., Gibbins, R., Owens, D., Luzio, S., Owens, D., Thomas, B. Prevalence of diabetic retinopathy within a national diabetic retinopathy screening service British Journal of Ophthalmology 99 1 64 68
  4. Noyel, G., Thomas, R., Bhakta, G., Crowder, A., Owens, D., Boyle, P., Thomas, B. Superimposition of eye fundus images for longitudinal analysis from large public health databases Biomedical Physics & Engineering Express 3 4 045015
  5. Thomas, R., Harvey, J., Owens, D., Thomas, B. When should screening for diabetic retinopathy begin for children with type 1 diabetes? Expert Review of Endocrinology & Metabolism 11 2 97 102

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