Table 2.

Repeatability and Normal Population Variability of Peripapillary Retinal Optical Coherence Tomography Angiographic Parameters

Group	Normal (N=34)		Glaucoma (N=41)	All (N=75)
Parameter	Within-visit repeatability (Pooled SD)	Population variation (SD)	Within-visit repeatability (Pooled SD)	Intraclass correlation coefficient
NFLP-CD	2.0 % area	4.8% area	2.2 % area	0.981
GCLP-CD	2.0 % area	5.7% area	2.1 % area	0.880
SVC-CD	1.7 % area	4.3% area	1.9 % area	0.976
DVC-CD	3.2 % area	8.9% area	3.2 % area	0.889
All-Plexus-CD	1.0 % area	3.9% area	1.7 % area	0.974

SD = standard deviation; CD = capillary density, NFLP = nerve fiber layer plexus, GCLP = ganglion cell layer plexus, SVC = superficial vascular complex, DVC = deep vascular complex.