Journal of Ophthalmology / 2015 / Article / Tab 5

Research Article

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

Table 5

Interdevice differences of the two devices in corneas with regular astigmatism.

  PentacamSirius values
Mean ± SD

Pachymetry (µm)
 Apex560.45 ± 36.41590.66 ± 55.62<0.0001
 Thinnest point554.84 ± 35.50545.88 ± 33.45<0.0001
Keratometry ant. surface (mm)
 3 mm flat meridian7.982 ± 0.3748.007 ± 0.3780.654
 3 mm steep meridian7.685 ± 0.3447.631 ± 0.3960.002
 5 mm flat meridian8.023 ± 0.3727.996 ± 0.3690.343
 5 mm steep meridian7.752 ± 0.3597.663 ± 0.3850.002
 7 mm flat meridian8.187 ± 0.4308.042 ± 0.429<0.0001
 7 mm steep meridian7.914 ± 0.3877.750 ± 0.387<0.0001
Keratometry back surface (mm)
 3 mm flat meridian6.719 ± 0.3776.838 ± 0.4190.001
 3 mm steep meridian6.347 ± 0.3636.317 ± 0.5360.587

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