Table 3.

CCT measurement differences between the three devices.

Parameter	Device comparison
	Pentacam HR versus IOLMaster 700	Pentacam HR versus Cirrus HD-OCT	IOLMaster 700 versus Cirrus HD-OCT
CCT [μm]
Differencea (mean ± SD)	10.99 ± 7.57	11.44 ± 8.91	0.44 ± 5.12
Range	−11.33–24.67	−24.00–26.67	−12.67–12.33
95% CI	8.94–13.04	9.03–13.85	−0.93–1.83
p value	<0.0001	<0.0001	0.519

CCT: central corneal thickness; CI: confidence interval; ^abetween the mean measurements of each device and of each eye; p values were calculated by one-sample t-test.