Comparison of Two Different Scheimpflug Devices in the Detection of Keratoconus, Regular Astigmatism, and Healthy Corneas

Table 3

Intraobserver variability of keratometry in healthy corneas (ICC = intraclass correlation coefficient).

	ICC
	Pentacam	Sirius
Flat meridian 3 mm to the apex	0.996	0.988
Steep meridian 3 mm to the apex	0.996	0.975
Flat meridian 5 mm to the apex	0.997	0.993
Steep meridian 5 mm to the apex	0.997	0.983
Flat meridian 7 mm to the apex	0.997	0.995
Steep meridian 7 mm to the apex	0.994	0.982
Back surface flat meridian 3 mm to the apex	0.977	0.933
Back surface steep meridian 3 mm to the apex	0.968	0.911