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Table 2 Comparison of corneal refractive power (K) measured by Cassini and Pentacam HR

From: Comparison of keratometric measurements between color light-emitting diode topography and Scheimpflug camera

  Anterior corneal surface Posterior corneal surface
Cassini Pentacam HR P-value* ICC Cassini Pentacam HR P-value* ICC
Steep K 44.80 (41.60–48.80) 44.72 (41.30–48.40) 0.057 0.974 6.58(5.97–7.13) 6.58(5.80–7.20) 0.791 0.876
Flat K 43.82 (41.22–47.07) 43.81 (41.10–46.80) 0.692 0.981 6.23(5.64–6.90) 6.31(5.60–6.90) 0.000** 0.859
Mean K 44.34 (41.46–47.84) 44.25 (41.20–47.40) 0.011** 0.983 6.4(5.83–6.95) 6.43(5.70–7.00) 0.033** 0.892
Astigmatism 1.03 (0.09–3.32) 0.91 (0.10–3.50) 0.004** 0.886 0.35(0.04–0.89) 0.29(0.00–0.80) 0.001** 0.563
Axis 91.67 (0.00–179.00) 87.78 (1.10–178.10) 0.485 0.763 93.80(0.00–180.00) 89.55(0.20–179.70) 0.639 −0.422
J0 −0.02 (−1.33–1.36) 0.03 (− 0.84–1.67) 0.045** 0.945 0.09(− 0.28–0.39) 0.13 (− 0.12–0.40) 0.002** 0.591
J45 0.01 (− 0.96–0.98) 0.00 (− 0.79–0.52) 0.845 0.851 − 0.01(− 0.36–0.42) 0.00(− 0.13–0.25) 0.493 0.252
  1. Values are presented as Mean (Range) (D)
  2. ICC intra-class correlation coefficient
  3. *Paired t-test