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Diabetic retinopathy in native and nonnative Canadians
Stuart A Ross1, Anne McKenna, Sheila Mozejko
1Faculty of medicine, University of Calgary, # 238-4411 16th Ave NW, Calgary, AB, Canada. drross@telus.net
Experimental Diabetes Research
|March 5, 2008
Summary
Native Canadians with type 2 diabetes have identical rates of diabetic retinopathy (DR) but more advanced changes. Ethnicity impacts DR severity, though key risk factors were similar between native and nonnative groups.
Area of Science:
- Ophthalmology
- Endocrinology
- Public Health
Background:
- Type 2 diabetes is prevalent in Native Canadian communities, with concerns about higher vascular complication rates.
- Diabetic retinopathy (DR) is a significant vascular complication of diabetes affecting vision.
Purpose of the Study:
- To examine the prevalence and incidence of DR and associated metabolic abnormalities in native and nonnative individuals.
- To compare the severity of DR between native and nonnative populations with type 2 diabetes.
Main Methods:
- The Southern Alberta Study of Diabetic Retinopathy (DR) compared native and nonnative subjects.
- Data collected included DR prevalence, incidence, and metabolic factors (A1c, blood pressure, lipids, diabetes duration).
Main Results:
- Prevalence rates of DR were identical (40%) in both native and nonnative type 2 diabetic subjects.
- Native subjects with DR showed a tendency towards more advanced retinopathy changes compared to nonnatives.
- Key metabolic risk factors (A1c, blood pressure, diabetes duration, lipids) did not significantly differ between the groups.
Conclusions:
- Ethnicity plays a role in the development and severity of diabetic retinopathy.
- Despite similar metabolic risk factors, native populations experience more severe DR, suggesting other ethnic-specific factors are involved.
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