Incidence of diabetic retinopathy in people with type 2 diabetes mellitus attending the Diabetic Retinopathy Screening Service for Wales: retrospective analysis
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In the online version of this paper (*BMJ* 2012;344:e874, doi:[10.1136/bmj.e874](https://www.bmj.com/lookup/doi/10.1136/bmj.e874)) by Rebecca L Thomas and colleagues, the last sentence in the Results section should have been: “For participants with a duration of diabetes of 10 years or more, the use of insulin treatment increased cumulative incidence greatly (without insulin treatment 2.24, 5.86, and 10.33 per 1000 people; with insulin treatment 9.61, 17.10, and 24.26 per 1000 people).”

## Notes

**Cite this as:** *BMJ* 2012;344:e2205