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Table 1 Refraction and keratometry assessed during follow-up visits in the two study groups

From: LASIK-induced corneal changes after correction of hyperopia with and without application of Mitomycin-C

  Group A (mean ± SD) Group B (mean ± SD) P -value
Refraction (D)
 Preoperative + 3.2 ± 1.2 + 3.3 ± 1 0.6271
 1 day postop. + 0.26 ± 0.21 + 0.24 ± 0.22 0.6092
 1 week postop. + 0.26 ± 0.21 + 0.27 ± 0.19 0.7392
 1 month postop. + 0.31 ± 0.21 + 0.33 ± 0.22 0.5262
 3 months postop. + 0.4 ± 0.24 + 0.45 ± 0.27 0.3052
 6 months postop. + 0.5 ± 0.31 + 0.67 ± 0.39 0.009 2*
 12 months postop. + 0.63 ± 0.37 + 0.89 ± 0.48 0.002 2*
p –value <  0.001 3* <  0.001 3*  
Average keratometry (D)
 Preoperative 42 ± 1.5 41.6 ± 1.5 0.0842
 1 day postop. 44 ± 2.9 44 ± 1.5 0.9292
 1 week postop. 44.2 ± 1.5 44 ± 1.5 0.3682
 1 month postop. 44.2 ± 1.5 43.9 ± 1.5 0.3272
 3 months postop. 44.1 ± 1.5 43.9 ± 1.5 0.3232
 6 months postop. 44 ± 1.5 43.7 ± 1.6 0.1492
 12 months postop. 43.9 ± 1.5 43.6 ± 1.6 0.038 2*
P –value <  0.001 3* <  0.001 3*  
  1. 1Student’s t test; 2Mann-Whitney U test; 3Friedman test;
  2. * Statistically significant at p <  0.05