Table 1 Demographic data and preoperative baseline characteristics.
Parameter | 2 Step PTK-PRK | Single Step TE-PRK | p value |
|---|---|---|---|
No. of Eyes | 50 | 50 | – |
No. of Patients | 25 | 25 | – |
Age (years)a | 25.1 ± 1.4 | 25.4 ± 1.9 | 0.912 |
Range | 20–35 | 20–37 | |
Gender (Female/Male) | (16/9) | (17/8) | – |
UDVA (logMAR)a | 1.04 ± 0.19 | 1.03 ± 0.23 | 0.948 |
CDVA (logMAR)a | 0.02 ± 0.006 | 0.02 ± 0.006 | 0.697 |
Manifest Sphere (D)a | −2.42 ± 0.18 | −2.37 ± 0.25 | 0.548 |
Range | From 0 to −5 | From 0 to −6 | |
Manifest Cylinder (D)a | −1.50 ± 0.16 | −1.26 ± 0.14 | 0.329 |
Range | From 0 to −4 | From 0 to −4 | |
MRSE (D)a | −3.17 ± 1.14 | −2.99 ± 1.61 | 0.269 |
Range | From −1 to −5.5 | From −0.75 to −6 | |
Central Epithelial Thickness (μm)a | 52.68 ± 2.21 | 53.24 ± 1.82 | 0.096 |
Range | 49–56 | 50–57 | |
Calculated depth of ablation (μm)a | 61.76 ± 15.38 | 61.34 ± 23.37 | 0.694 |
Range | 31–88 | 23–108 | |
Schirmer I test (mm)a | 16.66 ± 0.9 | 16.42 ± 1.0 | 0.234 |
Range | 15–18 | 15–19 | |
TBUT (seconds)a | 12.04 ± 0.79 | 11.88 ± 0.79 | 0.275 |
Range | 10 to 13 | 10 to 14 | |