Retinal arteriolar and venular phenotypes in a Flemish population: Reproducibility and correlates

Background: To our knowledge, no previous study assessed the reproducibility of non-mydriatic imaging of retinal microvessels using state-of-the-art Bland and Altman statistics. Methods: In 194 subjects randomly selected from a Flemish population, we post-processed retinal images (Canon Cr-DGi) using IVAN software to generate the retinal arteriole and venule equivalents (CRAE and CRVE) and the arteriole-to-venule ratio (AVR). We searched for significant (p ≤ 0.05) correlates of the retinal phenotypes, using stepwise multiple regression. To study intra- and inter-observer variability, 2 observe... Mehr ...