Lei J, Xu X, Chen L, et al. - Researchers previously assessed retinal large vessels and capillaries separately on optical coherence tomography angiography (OCTA) and sought to assess the role of these parameters in association to diabetic macular edema (DME) and ellipsoid zone disruption (EZD) in this cross-sectional study. Participants in the study were 31 patients (54 eyes) with severe non-proliferative diabetic retinopathy (25 eyes) or proliferative diabetic retinopathy (PDR, 29 eyes). Dilation of retinal larger vessels was correlated with macular edema in eyes with diabetic retinopathy, while dilation of retinal capillaries was related to ellipsoid zone disruption.