. Author manuscript; available in PMC: 2020 Dec 1.

Published in final edited form as: Am J Ophthalmol. 2019 Jul 16;208:111–123. doi: 10.1016/j.ajo.2019.07.003

TABLE 5.

Descriptive statistics for several choriocapillaris (CC) metrics in the 3×3 mm scans over a l 12 subjects.

Mean (SD)	The FCM method	The Phansalkar method					ANOVA test
Mean (SD)	The FCM method	2-pixel radius	5-pixel radius	12-pixel radius	15-pixel radius	25-pixel radius	ANOVA test
FDD, % (SD)	7.62 (3.60)	13.66 (8.18)	22.03 (7.57)	27.85 (6.68)	28.51 (6.58)	29.6 (6.27)	p<0.001
MFDS, μm (SD)	1703.6 (766.9)	1679.4 (881.0)	1718.8 (733.0)	2597.8 (1033.5)	2885.6 (1155.6)	3475.2 (1389.7)	p<0.001
FDN (SD)	361.9 (24.1)	632.6 (150.4)	1082.5 (156.1)	931.8 (166.5)	862.6 (161.1)	748.0 (149.8)	p<0.001
ICD, μm (SD)	33.0 (5.0)	33.0 (5.5)	33.2 (4.7)	40.9 (5.5)	42.8 (5.6)	45.5 (5.5)	p<0.001
FDA, μm2 (SD)	0.79 (0.25)	1.11 (0.64)	1.80 (0.60)	2.27 (0.54)	2.33 (0.53)	2.42 (0.51)	p<0.001

Abbreviations: FCM, Fuzzy C-means; SD, standard deviation; FD, Flow deficit; FDD, FD density; FDN, FD number; MFDS, mean FD size; ICD, inter-capillary distance; FDA, total FD area.