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

Table 6

Interdevice differences of the two devices in healthy corneas.

	Pentacam	Sirius	values
	Mean ± SD
Pachymetry (µm)
Apex	554.83 ± 42.85	588.23 ± 69.03	<0.0001
Thinnest point	549.44 ± 38.34	539.35 ± 45.43	<0.0001
Keratometry ant. surface (mm)
3 mm flat meridian	7.836 ± 0.318	7.793 ± 0.324	<0.0001
3 mm steep meridian	7.708 ± 0.316	7.661 ± 0.334	<0.0001
5 mm flat meridian	7.878 ± 0.320	7.797 ± 0.323	<0.0001
5 mm steep meridian	7.747 ± 0.314	7.678 ± 0.328	<0.0001
7 mm flat meridian	7.999 ± 0.332	7.830 ± 0.325	<0.0001
7 mm steep meridian	7.852 ± 0.309	7.711 ± 0.322	<0.0001
Keratometry back surface (mm)
3 mm flat meridian	6.571 ± 0.436	6.669 ± 0.561	<0.0001
3 mm steep meridian	6.295 ± 0.336	6.264 ± 0.429	0.337