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Retinal microvascular abnormalities and renal dysfunction: the atherosclerosis risk in communities study
Tien Yin Wong1, Josef Coresh, Ronald Klein
1Centre for Eye Research Australia, University of Melbourne, 32 Gisborne Street, Victoria 3002, Australia. twong@unimelb.edu.au
Journal of the American Society of Nephrology : JASN
|September 2, 2004
Summary
Eye microvascular abnormalities like retinopathy and hemorrhages are linked to kidney dysfunction in adults. This suggests shared underlying processes may damage small blood vessels in both the eyes and kidneys.
Area of Science:
- Ophthalmology
- Nephrology
- Cardiovascular Science
Background:
- Diabetic microvascular disease is a known cause of renal dysfunction.
- Retinal microvascular abnormalities may indicate broader systemic vascular damage.
Purpose of the Study:
- To investigate the association between retinal microvascular abnormalities and the development of renal dysfunction.
- To explore if common systemic microvascular processes affect both eye and kidney health.
Main Methods:
- Utilized data from the Atherosclerosis Risk in Communities Study (n=10,056).
- Retinal photography assessed microvascular abnormalities (e.g., retinopathy, hemorrhages, microaneurysms, soft exudates, arteriovenous nicking).
- Renal dysfunction defined by serum creatinine increase or CKD-related outcomes over a 6-year follow-up.
Main Results:
- 2.7% of participants developed renal dysfunction.
- Retinopathy (OR 2.0), microaneurysms (OR 2.0), retinal hemorrhages (OR 2.6), soft exudates (OR 2.7), and arteriovenous nicking (OR 1.4) were significantly associated with increased odds of renal dysfunction.
- These associations remained significant after adjusting for major risk factors like diabetes and blood pressure.
Conclusions:
- Retinal microvascular abnormalities are independently associated with incident renal dysfunction.
- Findings suggest a common underlying pathophysiology for microvascular damage in the eyes and kidneys.
- Early detection of retinal changes may help identify individuals at risk for kidney disease.