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Arteriovenous Ratio Calculation Using
Image-Processing Techniques
Manuel G. Penedo, Sonia González, Noelia Barreira, Marc Saez,
Antonio Pose-Reino, and María Rodríguez-Blanco
12.1 Introduction
The eye fundus is a window to analyze the microvasculature in vivo since retinal vascular
imaging techniques provide the means to observe the retinal structures and the retinal
microcirculation in a noninvasive manner. The retinal vessel tree is affected by the same
diseases as the rest of the vasculature, so that an analysis of retinal vascular changes helps
in the diagnosis of several pathologies that affect the vasculature, such as hypertension or ...