Xu X, Yannuzzi NA, Fernández-Avellaneda P, et al. - In this cross-sectional pilot study, researchers sought to propose a simple method for distinguishing retinal veins from arteries on optical coherence tomography angiography (OCTA). Color depth encoded, greyscale full-thickness retina, superficial plexus, and deep capillary plexus from nine 3x3 mm and nine 6x6 mm OCTA scans were four exported and aligned default en face slabs. According to findings, significant improvement in grading performance at each stage was noted. The authors found no significant correlation between accuracy and time spent grading or between accuracy and years in practice. A simple method for precisely distinguishing retinal arteries from veins on OCTA was described, which includes the use of vortices in the deep capillary plexus to identify the venous origin.