| |
Transepithelial PRK
|
Off-flap Epi-LASIK
|
P value
|
|---|
|
Parameter
|
Mean ± SD
|
Range
|
Mean ± SD
|
Range
|
|---|
|
Refractive errors (D)
|
|
Sphere
|
−6.03 ± 1.97
|
−9.50, −2.50
|
− 6.18 ± 2.01
|
−9.75, − 2.50
|
.363
|
|
Cylindrical
|
−1.09 ± 0.72
|
−3.00, 0.00
|
− 1.03 ± 0.73
|
− 3.50, 0.00
|
.616
|
|
SE
|
−6.57 ± 2.01
|
−10.00, − 2.88
|
− 6.67 ± 1.99
|
− 10.25, − 2.88
|
.519
|
|
UDVA (logMAR)
|
1.07 ± 0.22
|
0.50, 1.60
|
1.08 ± 0.23
|
0.50, 1.60
|
.730
|
|
CDVA (LogMAR)
|
−0.003 ± 0.05
|
−0.10, 0.10
|
0.003 ± 0.04
|
−0.10, 0.10
|
.423
|
|
CCT (um)
|
498.78 ± 23.81
|
465.00, 570.00
|
499.00 ± 22.53
|
462.00, 556.00
|
.789
|
|
Total ablation zone (mm)
|
7.95 ± 0.32
|
6.70, 8.44
|
7.47 ± 0.26
|
6.89, 8.14
|
<.001
|
|
Optical zone (mm)
|
6.30 ± 0.32
|
5.80, 7.00
|
6.30 ± 0.35
|
5.80, 7.00
|
.872
|
|
Stromal ablation depth (um)
|
99.58 ± 23.18
|
44.00, 133.00
|
101.19 ± 19.40
|
61.00, 129.00
|
.232
|
- SE Spherical equivalent, UDVA Uncorrected distance visual acuity, CDVA Corrected distance visual acuity, logMAR Logarithm of the minimum angle of resolution, CCT Central corneal thickness
