Skip to main content

Table 3 Corneal epithelial defect (CED) area in arm A (n = 39 bilateral cases) and arm B (n = 33 bilateral cases)

From: Comparison of transepithelial and conventional photorefractive keratectomy in myopic and myopic astigmatism patients: a randomized contralateral trial

 

Method

Operation day

Day 1

Day 2

Day 3

3-day change

P-value

Arm A

tPRK

54.35 ± 5.26

36.97 ± 9.29

10.55 ± 6.90

1.17 ± 1.85

−55.60 ± 5.78

0.02

mPRK

59.68 ± 7.34*

38.02 ± 8.14

9.06 ± 6.29

0.61 ± 1.32

−61.68 ± 7.61

Arm B

tPRK

54.27 ± 4.76

37.34 ± 13.07

11.60 ± 9.10

2.28 ± 4.36

−53.77 ± 7.10

0.16

aaPRK

64.96 ± 6.54**

45.23 ± 7.36*

14.80 ± 6.29

2.67 ± 3.82

−61.27 ± 7.12

  1. tPRK Transepithelial photorefractive keratectomy, mPRK Mechanical PRK, aaPRK Alcohol assisted PRK
  2. Based on three-day change of CED by random mixed-effect model adjusted for correlation of fellow eyes and follow-up times
  3. All data are presented as Mean ± SD (mm2)
  4. Bold values are statistically significant by random mixed-effect model adjusted for correlation of fellow eyes
  5. *P<0.01
  6. **P<0.001