1. Features of the choriocapillaris on four different optical coherence tomography angiography devices

    Features of the choriocapillaris on four different optical coherence tomography angiography devices

    Purpose To investigate the features of the choriocapillaris using four different optical coherence tomography angiography (OCTA) devices. Methods OCTA images of the choriocapillaris from consecutive healthy subjects were obtained with four different OCTA devices (Zeiss PLEX Elite, Topcon DRI OCT-1 Atlantis, Zeiss AngioPlex, and Heidelberg Spectralis OCTA). The 3 × 3 mm OCTA images were processed with ImageJ. The mean vascular density and mean flow void area of the choriocapillaris were compared among devices. Flow voids were analyzed with two different imaging adjustment methods, auto-local threshold with the Phansalkar method and a method using a device-specific threshold value. Results The mean ...

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