Fig. 1.

(A) OCTA of the macular region, showing an angiogram of the retinal circulation in the superficial capillary plexus. The image depicts the retinal arteries and veins within the macular region in a binarized OCTA image, which represents the blood vessels in white color. The central area devoid of vessels represents the foveal avascular zone (*). (B) Color image with ETDRS sectors, depicting the 9 sectors of the ETDRS grid in the macular region. The fovea is represented by the central circle (C). Both inner (I) and outer (O) rings are further subdivided into superior (S), nasal (N), inferior (I) and temporal (T) region.