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Table 2 Changes in the postoperative conjunctival autograft thickness and conjunctival harvest site thickness following femtosecond laser-assisted pterygium surgery over a 12-month period

From: Cosmetic outcome of femtosecond laser-assisted pterygium surgery

  Thickness
mean ± SD
% of CAG thickness < 200 μm P-valuea
Postop CAG thickness (μm)    0.88
 1 day (N = 20) 199.9 ± 74.0 50.0  
 1 month (N = 23) 187.3 ± 84.6 60.9  
 3 months (N = 24) 182.0 ± 87.8 62.5  
 6 months (N = 24) 178.5 ± 85.8 58.3  
 12 months (N = 24) 174.7 ± 86.6 58.3  
Postop CHS thickness (μm)    0.22
 1 day (N = 20) 318.9 ± 89.0  
 1 month (N = 23) 290.2 ± 82.0  
 3 months (N = 24) 269.6 ± 88.6  
 6 months (N = 24) 264.8 ± 84.6  
 12 months (N = 24) 270.1 ± 77.7  
  1. CAG = conjunctival autograft; CHS = conjunctival harvest site; SD = standard deviation
  2. Missing data were compensated by last observation carried forward (LOCF) method
  3. aThe mean differences of CAG and CHS thickness among different time points were calculated using one-way analysis of variance (ANOVA)