Comparison of Anterior Segment Measurements Obtained by Three Different Devices in Healthy Eyes

Table 1

Mean values and variance of the flat SimK, steep SimK, corneal astigmatism, ACD, and WTW measurements by the IOL Master, Galilei, and WAM 5500 methods and the intraclass coefficients for three repeated measurements.

		Mean	𝑆𝑤 (±)	ICC	Lower 95% CI	Upper 95% CI	COV (%)
IOL Master	Flat SimK (D)	43.53	1.49	0.999	0.999	0.999	3.43
	Steep SimK (D)	44.28	1.52	0.999	0.998	0.999	3.44
	Corneal astigmatism (D)	0.76	0.42	0.971	0.959	0.980	55.35
	ACD (mm)	3.60	0.30	0.974	0.965	0.982	8.23
	WTW (mm)	12.12	0.42	0.967	0.953	0.978	3.47
Galilei	Flat SimK (D)	43.37	1.48	0.997	0.995	0.998	3.42
	Steep SimK (D)	44.11	1.51	0.998	0.997	0.999	3.43
	Corneal astigmatism (D)	0.74	0.40	0.855	0.793	0.901	53.54
	ACD (mm)	3.87	0.42	0.937	0.908	0.958	3.42
	WTW (mm)	12.20	0.46	0.937	0.908	0.958	3.79
WAM 5500	Flat SimK (D)	43.52	1.49	0.992	0.988	0.995	3.44
	Steep SimK (D)	44.34	1.59	0.988	0.981	0.992	3.58
	Corneal astigmatism (D)	0.82	0.48	0.790	0.679	0.862	58.78

𝑆_𝑤: within-subjects variance; ICC: intraclass coefficients; CI: confidence interval; COV: coefficient of variation.