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Prevalence of diabetic retinopathy within a national diabetic retinopathy screening service

Thomas, Rebecca L., Dunstan, Frank D, Luzio, Stephen D, Chowdhury, Sharmistha R, North, Rachel V, Hale, Sarah L, Gibbins, Robert L. and Owens, David R 2015. Prevalence of diabetic retinopathy within a national diabetic retinopathy screening service. British Journal of Ophthalmology 99 (1) , pp. 64-68. 10.1136/bjophthalmol-2013-304017

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Abstract

Aims Determine the prevalence and severity of diabetic retinopathy (DR) and risk factors in a large community based screening programme, in order to accurately estimate the future burden of this specific and debilitating complication of diabetes. Methods A cross-sectional analysis of 91 393 persons with diabetes, 5003 type 1 diabetes and 86 390 type 2 diabetes, at their first screening by the community based National Diabetic Retinopathy Screening Service for Wales from 2005 to 2009. Image capture used 2×45° digital images per eye following mydriasis, classified by qualified retinal graders with final grading based on the worst eye. Results The prevalence of any DR and sight-threatening DR in those with type 1 diabetes was 56.0% and 11.2%, respectively, and in type 2 diabetes was 30.3% and 2.9%, respectively. The presence of DR, non-sight-threatening and sight-threatening, was strongly associated with increasing duration of diabetes for either type 1 or type 2 diabetes and also associated with insulin therapy in those with type 2 diabetes. Conclusions Prevalence of DR within the largest reported community-based, quality assured, DR screening programme, was higher in persons with type 1 diabetes; however, the major burden is represented by type 2 diabetes which is 94% of the screened population.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Optometry and Vision Sciences
Medicine
Subjects: R Medicine > RC Internal medicine
R Medicine > RE Ophthalmology
Publisher: BMJ Publishing Group
ISSN: 0007-1161
Date of Acceptance: 8 July 2014
Last Modified: 17 Feb 2020 10:31
URI: http://orca.cf.ac.uk/id/eprint/67386

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