Fig. 2
From: Optical coherence tomography angiography metrics in different stages of diabetic macular edema

Optical coherence tomography angiography images of foveal avascular zone (FAZ) parameters among different diabetic macular edema (DME) grades. The acircularity index was significantly increased as DME progresses. The eye with early DME has an acircularity index of 1.14, the eye with advanced DME has an acircularity index of 1.36, and the eye with severe DME has an acircularity index of 1.67