Research Article
Comparison of Two Different Scheimpflug Devices in the Detection of Keratoconus, Regular Astigmatism, and Healthy Corneas
Table 4
Interdevice differences of the two devices in keratoconus patients.
| | Pentacam | Sirius | values | | Mean ± SD |
|
Pachymetry (µm) | | | | Apex | 465.87 ± 63.74 | 466.70 ± 87.52 | 0.975 | Thinnest point | 442.27 ± 71.71 | 416.82 ± 76.04 | <0.0001 | Keratometry ant. surface (mm) | | | | 3 mm flat meridian | 7.096 ± 0.923 | 7.012 ± 0.955 | 0.059 | 3 mm steep meridian | 6.643 ± 0.873 | 6.440 ± 0.967 | <0.0001 | 5 mm flat meridian | 7.406 ± 0.716 | 7.082 ± 0.863 | <0.0001 | 5 mm steep meridian | 6.983 ± 0.722 | 6.596 ± 0.872 | <0.0001 | 7 mm flat meridian | 7.760 ± 0.564 | 7.203 ± 0.771 | <0.0001 | 7 mm steep meridian | 7.347 ± 0.595 | 6.776 ± 0.796 | <0.0001 | Keratometry back surface (mm) | | | | 3 mm flat meridian | 5.884 ± 0.795 | 5.938 ± 1.217 | 0.662 | 3 mm steep meridian | 5.235 ± 0.827 | 4.745 ± 1.177 | <0.0001 |
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