In OCTA-measured vessel density, overall differences were found between the groups for optic nerve head, papillary, and peripapillary vessel density (all p<0.001, Table 2). Like for OCT RNFL, pairwise t-tests showed that for all vessel density measures (except papillary area vessel density comparing POAG to suspects) that POAG to suspects (p = 0.003–0.023) and controls to suspects (p = 0.001–0.007) were statistically significantly different with the suspects having values in between those of POAG and normal controls (Table 3). For intra-visit, inter-visit and inter-observer repeatability, the ICC values were based on measurements from 16 normal subjects (Table 4).