Clinical Report: Impact of RAS Inhibitors on Retinal Microvascular Health
Overview
This pilot study evaluates the short-term effects of renin-angiotensin system inhibitors (RASi) on retinal microvascular parameters in patients with diabetic kidney disease (DKD). Significant decreases in venous fractal dimension and tortuosity were observed after 12 weeks of RASi therapy.
Background
Diabetic kidney disease (DKD) and diabetic retinopathy (DR) are significant microvascular complications of diabetes mellitus, often occurring together. RAS inhibitors have been shown to provide protective effects on both DKD and DR, yet their specific impact on retinal microvascular parameters remains unclear.
Data Highlights
Parameter
Baseline
Post-Treatment
p-value
Venous Df
Not specified
Decreased
0.0389
Venous TORT
Not specified
Decreased
0.0496
Key Findings
21 out of 27 patients (77.8%) were male, with a mean age of 55.7 years.
15 patients (55.6%) had diabetic retinopathy (DR).
Significant decreases in venous fractal dimension (Df) and tortuosity (TORT) were observed after 12 weeks of RASi treatment.
No significant changes were noted in parameters derived from the central retinal region.
Changes in retinal microvascular parameters correlated with alterations in clinical renal indicators.
Clinical Implications
The findings indicate specific alterations in peripheral retinal venous parameters after RASi therapy.
Conclusion
This study highlights the impact of RASi on retinal microvascular health in DKD patients.
