Table 2.

Intraclass correlation coefficients (95% confidence interval) of the vessel density and vessel length density measurements derived with the four optical coherence tomography angiography systems using third-party software.

System	Vascular density				Vascular length density
	3 mm scan pattern		6 mm scan pattern		3 mm scan pattern		6 mm scan pattern
	SCP	DCP	SCP	DCP	SCP	DCP	SCP	DCP
Heidelberg	0.623 (0.484–0.732)	0.465 (0.292–0.608)	0.278 (0.083–0.453)	0.407 (0.226–0.561)	0.683 (0.559–0.777)	0.483 (0.313–0.622)	0.218 (0.020–0.401)	0.408 (0.227–0.562)
Optovue	0.598 (0.452–0.713)	0.450 (0.275–0.596)	0.730 (0.621–0.811)	0.670 (0.543–0.767)	0.477 (0.307–0.618)	0.577 (0.427–0.697)	0.680 (0.556–0.775)	0.700 (0.581–0.789)
Topcon	0.675 (0.549–0.771)	0.260 (0.064–0.437)	0.497 (0.331–0.634)	0.108 (−0.094–0.301)	0.736 (0.629–0.816)	0.281 (0.087–0.455)	0.637 (0.501–0.742)	0.107 (−0.094–0.300)
Zeiss	0.732 (0.624–0.813)	0.785 (0.694–0.851)	0.773 (0.678–0.842)	0.769 (0.672–0.839)	0.598 (0.453–0.713)	0.730 (0.621–0.812)	0.529 (0.369–0.659)	0.706 (0.589–0.794)

DCP: deep capillary plexus; SCP: superficial capillary plexus.