Fig. 2From: Resistive index of ophthalmic artery correlates with retinal pigment epithelial alterations on spectral domain optical coherence tomography in diabetic retinopathySD-OCT macular cube showing ellipsoid zone (EZ). a Grade 0: intact EZ, b Grade 1: focal disruption (localized, subfoveal EZ disruption), c Grade 2: global disruption (generalized EZ disruption throughout the macular cube)Back to article page