Retinopathy Team


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Prof. David Owens

Lead - Diabetes Retinopathy 

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Professor Owens has been involved in the management of diabetes and related research activities for more than 35 years. His primary interests include the evolution of glucose intolerance and pathophysiology of type 2 diabetes including new and emerging therapies. He also has a keen interest in all micro‐vascular complications of diabetes especially diabetic retinopathy and nephropathy and introduced the first community wide National Diabetic Retinopathy Screening Service for Wales as its Director and Clinical Lead from its establishment in 2002 up to 2007. With his interest in research activties, he was proud to have been the inaugural Chairperson for the Diabetes Research Network in Wales in 2005. He continues to support research activities in the area of diabetic retinopathy and the natural history of diabetes and has supervised many MD, PhD and MSc students over the years.


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Dr. Rebecca Thomas

Informatics Lead/ Diabetes Retinopathy Researcher

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Dr. Rebecca Thomas has been a researcher in diabetic retinopathy for over 10 years and completed a PhD on the epidemiology of diabetic retinopathy and an assessment of optimal screening intervals. Her current research areas include: the use of retinal images for the detection of other conditions such as cardiovascular disease, and improving screening programmes for diabetic retinopathy. She has also been involved in the development of diabetic retinopathy screening programmes in Mauritius and Trinidad. 


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Dr. Jim Rafferty

Data Analyst

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