Fig 1.
Optical coherence tomography angiography (OCTA) segmentation and quantitative analysis of OCTA Parameters.
(A-C) Segmentation boundaries for the superficial (SCP), intermediate (ICP), and deep capillary plexuses (DCP) shown on B-Scan. Red and green lines on B-scan represent segmentation boundaries of each plexus. (D) En face OCTA image of vessel density (VD) calculation. Inner ring (1mm diameter) represents the fovea and outer ring (3mm diameter) represents the 3x3 mm macular area. Area between the inner and outer ring represents the parafovea. (E) Measurement of the foveal avascular zone (FAZ) area using built-in AngioAnalytics software. Outer circle represents the FD-300 VD, a measurement of VD in a 300 μm ring around the FAZ for the full retinal thickness. (F) En face OCTA image of the choriocapillaris blood flow area (BFA) with inner ring (1mm diameter) representing the fovea and outer ring (3mm diameter) representing the 3x3 mm macular area. Area between the inner and outer ring represents the BFA of the parafovea.
Table 1.
Baseline patient demographics and clinical characteristics.
Table 2.
Comparison of OCTA parameters between Black and White subjects.