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Table 2 Main Pentacam indicesa and bivariate analysis

From: A predictive model for early diagnosis of keratoconus

  Controls ESKC KC ESKC Vs Controls p-Value KC Vs Controls p-Value
Anterior surface topography
 Kmb 43.55(1.43) 43.37(1.55) 48.26(4.64) 0.616  
 KMAXb 45.49(1.92) 45.91(1.97) 55.14(7.66) 0.285 < 0.01
 IVA 0.16(0.08) 0.28(0.14) 0.79(0.51) < 0.01 < 0.01
Posterior surface topography
 Km −6.246(0.22) −6.148(0.34) −7.15(0.9) 0.067 < 0.01
 Pachymetry
 CCTc 543.76(36.42) 515.20(27.59) 466.92(55.94) < 0.01 < 0.01
 MCTc 538.52(37.03) 503.67(26.62) 456.93(50.65) < 0.01 < 0.01
Corneal Aberrometryd
 RMS HOA 0.52(0.23) 0.69(0.31) 1.74(1.02) < 0.01 < 0.01
 Ant Coma 90° 0.01(0.20) − 0.49(0.43) −2.06(1.51) < 0.01 < 0.01
 Post Coma 90° −0.01(0.05) 0.11(0.10) 0.53(0.39) < 0.01 < 0.01
 Coma 90° 0.01(0.21) −0.40(0.32) −1.88(1.41) < 0.01 < 0.01
 Trefoil 0° 0.03(0.18) 0.08(0.22) 0.09(0.34) 0.396 < 0.01
 Sph. Aberrat 0.20(0.14) 0.18(0.16) −0.279(0.75) 0.204 < 0.01
  1. amean (sd) CCT = Central Corneal Thickness, MCT = Minimum corneal thickness, Sph Aberrat = Spherical Aberration, bdiopters cμm dRMS (μm)