Figure 5.

Automated avascular area detection. (A) Reflectance optical coherence tomographic (OCT) image, with shadow artifacts visible to the left. (B) Optical coherence tomographic angiography (OCTA) image of the superficial vascular complex (SVC), with some apparently avascular area actually caused by shadow artifacts. (C) Manually graded ground avascular area (green) overlaid on the angiogram. (D) Artificial intelligence produced avascular area (blue) and area identified as shadow artifact (yellow) by the algorithm. For slab definitions see the caption to Figure 1. Reprinted from Guo et al. (22).