Table 5A.

Agreement estimates of measurements in the Standard zone on photographs taken repeatedly under similar conditions.

Location	Quality	ICC (95%CI)
		CRAE	CRVE
Disc centered	Good (n = 67)	0.89 (0.84–0.93)**	0.92 (0.88–0.95)***
	Reject (n = 129)	0.78 (0.71–0.83)**	0.83 (0.78–0.87)**
	Usable (n = 14)	0.98 (0.94–0.99)***	0.94 (0.86–0.98)***
Macula centered	Good (n = 264)	0.94 (0.93–0.95)***	0.95 (0.94–0.96)***
	Reject (n = 43)	0.78(0.65–0.86)**	0.81(0.70–0.88)**
	Usable (n = 29)	0.93 (0.88–0.96)***	0.91 (0.84–0.95)***

*Moderate: between 0.5 and 0.75, **Good: between 0.75 and 0.9, ***Excellent: >0.90. ICC, intraclass correlation; CI, confidence interval; CRAE, central retinal artery equivalent; CRVE, central retinal vein equivalent.