| Central corneal thickness    and measured intra-ocular pressure before and after enhancement | 
      
      
        | Mean ± Standard Deviation    (Range) | 
      
      
        | Variable | 
        Preop. | 
        Postop. | 
      
      
        | Central corneal thickness (μm) | 
        518.67 ± 43.68 (448 to 591) | 
        499.8 ± 50.81 (423 to 586) | 
      
      
        | Intraocular pressure (mmHg) | 
        12.87 ± 1.85 (10 to 17) | 
        12.17 ± 1.86 (9 to 16) | 
      
      
        | Flap thickness (μm) | 
        102.74 ± 4.85 (95 to 112) | 
          | 
      
      
        | Intraoperative pachymetry (μm) | 
        416.63 ± 42.79 (344 to 489) | 
          |