Comparison of Repeatability and Agreement between Swept-Source Optical Biometry and Dual-Scheimpflug Topography

Table 1

Repeatability of various biometric parameters with two biometry devices.

Parameters	Within-subject standard deviation		Coefficient of variation (%)		ICC (95% CI)
	IOLMaster 700	Galilei G6	IOLMaster 700	Galilei G6	IOLMaster 700	Galilei G6
AL (mm)	0.005	0.037	0.021	0.147	1.000 (1.000-1.000)	0.999 (0.998–0.999)
ACD (mm)	0.008	0.018	0.231	0.568	0.999 (0.998–0.999)	0.996 (0.993–0.997)
Kf (D)	0.098	0.282	0.228	0.664	0.989 (0.984–0.992)	0.956 (0.938–0.970)
Ks (D)	0.076	0.202	0.172	0.458	0.997 (0.996–0.998)	0.980 (0.971–0.986)
Km (D)	0.069	0.210	0.158	0.486	0.996 (0.994–0.997)	0.973 (0.962–0.982)
WTW (mm)	0.110	0.091	0.854	0.768	0.879 (0.838–0.912)	0.832 (0.769–0.882)
CCT (μm)	1.873	4.148	0.349	0.731	0.995 (0.993–0.996)	0.965 (0.950–0.976)
LT (mm)	0.011	0.04	0.332	0.983	0.999 (0.999–0.999)	0.984 (0.977–0.990)

AL: axial length; ACD: anterior chamber depth; Kf: flat keratometry; Ks: steep keratometry; Km: mean keratometry; WTW: white-to-white corneal diameter; CCT: central corneal thickness; LT: lens thickness; ICC: intraclass correlation coefficient.