Fig. 4.

OCT-A imaging distortions caused by a ocular motion, revealing loss of detail despite the high signal score, with apparent doubling of vessels; b segmentation failure, leading to visualization of vessels from different layers in one image that does not reflect actual anatomy; c criss-cross image defects introduced after software-based motion correlation to compensate for ocular motion artifacts; d intrinsic properties of the eye, such as vitreous ‘floaters’, causing a loss of signal with media opacity. Yellow arrows indicate regions of interest. OCT-A optical coherence tomography angiography. Source: Images provided by Giovanni Staurenghi