Retinal vascular geometry and its association to silent brain infarction

Area of Science:

• Ophthalmology and Neurology
• Medical Imaging Analysis
• Vascular Health

Background:

• Silent brain infarction (SBI) is a significant risk factor for stroke and cognitive decline.
• Retinal vascular geometry reflects cerebrovascular health.
• Understanding the link between retinal and brain vasculature is crucial for early disease detection.

Purpose of the Study:

• To investigate the association between retinal vascular geometry parameters and the presence of silent brain infarction (SBI).
• To explore the potential of retinal vascular features as early biomarkers for SBI in the Chinese population.

Main Methods:

• A cross-sectional study analyzed fundus photographs and MRI data of 227 SBI patients and 227 controls.
• Quantitative assessment of retinal vessel fractal dimension (FD), artery diameter (FDa), vein diameter (FDv), and arteriovenous ratios (AVR) using SIVA software.
• Retinal vascular measurements included central retinal artery and vein diameters at different disc distances (CRAEB, CRAEC, CRVEB, CRVEC).

Main Results:

• Subjects with SBI exhibited significantly lower FD, FDa, FDv, CRAEB, CRAEC, CRVEB, CRVEC, and AVRB compared to controls.
• Logistic regression indicated that higher values of these retinal vascular parameters were associated with a lower likelihood of SBI.
• No significant difference in AVRC was observed between SBI and control groups.

Conclusions:

• Retinal vascular geometry is significantly associated with silent brain infarction.
• The study highlights the potential of retinal vascular parameters as novel biomarkers for the early diagnosis of SBI.
• Further research can validate these findings for clinical application in stroke prevention.