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Table 3 Comparison of corneal topometric indices between control and blepharospasm

From: Evaluation of Scheimpflug imaging parameters in blepharospasm and normal eyes

  Control Blepharospasm
Mild Moderate Severe
Index of surface variance 20.9 ± 13.4 20.83 ± 11.5 18.1 ± 5.26 29.67 ± 11.7*
Index of vertical asymmetry 0.16 ± 0.10 0.16 ± 0.05 0.15 ± 0.06 0.23 ± 0.09*
Keratoconus index 1.02 ± 0.03 1.02 ± 0.02 1.02 ± 0.03 1.04 ± 0.03
Central keratoconus index 1.002 ± 0.01 1.01 ± 0.01 1.001 ± 0.01 1.007 ± 0.01
Index of height asymmetry 6.13 ± 4.69 7.07 ± 5.28 6.05 ± 5.58 9.46 ± 8.42
Index of height decentration 0.01 ± 0.01 0.01 ± 0.01 0.01 ± 0.01 0.02 ± 0.01
Radii minimum 7.63 ± 0.64 7.32 ± 0.15 7.31 ± 0.37* 7.18 ± 0.20**
  1. Data are mean standard deviation unless otherwise indicated
  2. *P < 0.05, ** P < 0.01, versus controls