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Table 1 Characteristics of the two groups ( x ¯ ± s )

From: The influence of corneal astigmatism on retinal nerve fiber layer thickness and optic nerve head parameter measurements by spectral-domain optical coherence tomography

  Normal astigmatism High corneal astigmatism group Range P *
Age 28.64(8.01) 25.42(7.44) 18-39 0.099
Sex(male/female) 15 /19 16/20 0.978
Axial length 26.84(1.23) 26.87(0.84) 24.24-29.84 0.916
Spherical equivalent −8.06(2.20) −8.10(1.28) −6.00— -15.50 0.930
Spherical refraction −7.83(2.13) −7.53(1.32) −5.50— -15.00 0.473
Total astighmatism −0.49(0.44) −1.15(0.67) 0.00— -2.50 0.026
Corneal astigmatism −0.67(0.28) −1.65(0.49) −0.20— -3.30 0.000
  1. * Independent t-test, Δ χ2 test.