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Quantification of Vascular Parameters in Whole Mount Retinas of Mice with Non-Proliferative and Proliferative Retinopathies
Published on: March 12, 2022
Retinal vascular caliber, diabetes, and retinopathy
Annette Kifley1, Jie Jin Wang, Sudha Cugati
1Centre for Vision Research, Department of Ophthalmology, University of Sydney, Australia.
American Journal of Ophthalmology
|May 26, 2007
Summary
Diabetic retinopathy (DR) is linked to wider retinal venules. As DR severity increases, venular widening becomes more pronounced in individuals with diabetes.
Area of Science:
- Ophthalmology
- Diabetology
- Vascular Biology
Background:
- Diabetes mellitus is a systemic disease affecting microvasculature.
- Diabetic retinopathy (DR) is a leading cause of vision loss in diabetic patients.
- Retinal vessel caliber changes may indicate microvascular complications of diabetes.
Purpose of the Study:
- To investigate the association between retinal vessel caliber and diabetes.
- To determine the relationship between retinal venular and arteriolar caliber and the presence and severity of diabetic retinopathy (DR).
Main Methods:
- Population-based cross-sectional study (Blue Mountains Eye Study, n=3,654, age >=49).
- Diabetes defined by physician diagnosis or fasting blood glucose levels.
- Retinal vessel caliber measured from digitized retinal images; DR graded from photographs.
Main Results:
- Wider mean retinal venular caliber observed in moderate-severe nonproliferative DR compared to nondiabetic individuals and those with diabetes but no DR (P < .0001).
- Wider mean retinal arteriolar caliber found in participants with diabetes compared to nondiabetic participants (P < .01).
- Retinal venular caliber significantly widened with increasing DR severity.
Conclusions:
- Increasing severity of diabetic retinopathy is associated with significant widening of retinal venular caliber.
- Retinal venular caliber may serve as a biomarker for microvascular changes in diabetes.
- Findings highlight the impact of diabetes on retinal vasculature.
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