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Table 2 Postoperative visual acuity and refraction outcomes (mean ± SD)

From: Comparison of clinical results between trans-PRK and femtosecond LASIK for correction of high myopia

Parameter

1 month

3 months

6 months

12 months

P (time)

P (group)

UDVA (log MAR)

   

0.87

0.039

 TPRK

−0.03 ± 0.04

− 0.03 ± 0.04

− 0.05 ± 0.05

− 0.04 ± 0.04

  

 FS-LASIK

−0.03 ± 0.05

− 0.03 ± 0.05

− 0.02 ± 0.08

− 0.01 ± 0.08

  

CDVA (log MAR)

   

0.075

0.621

 TPRK

−0.03 ± 0.04

−0.03 ± 0.04

−0.06 ± 0.04

− 0.06 ± 0.05

  

 FS-LASIK

−0.04 ± 0.04

−0.04 ± 0.05

− 0.04 ± 0.04

−0.04 ± 0.05

  

Sphere (D)

    

< 0.001

0.062

 TPRK

0.31 ± 0.73

0.32 ± 0.43

0.16 ± 0.47

0.11 ± 0.39

  

 FS-LASIK

0.28 ± 0.50

0.19 ± 0.42

0.08 ± 0.54

−0.06 ± 0.47

  

Cylinder (D)

    

0.511

0.511

 TPRK

−0.40 ± 0.46

−0.33 ± 0.37

− 0.34 ± 0.25

−0.32 ± 0.20

  

 FS-LASIK

−0.39 ± 0.28

−0.35 ± 0.29

− 0.39 ± 0.29

−0.40 ± 0.34

  

SER (D)

    

0.024

0.03

 TPRK

0.11 ± 0.73

0.16 ± 0.46

−0.01 ± 0.48

− 0.05 ± 0.39

  

 FS-LASIK

0.08 ± 0.49

0.02 ± 0.41

−0.11 ± 0.54

−0.26 ± 0.47

  
  1. UDVA uncorrected distance visual acuity, CDVA corrected distance visual acuity, SER spherical equivalent refraction, SD standard deviation