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Table 4 Healing rate 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 Day 0 to 1 Day 1 to 2 Day 2 to 3 P-value
Arm A tPRK 17.38 ± 7.63 26.42 ± 6.35 9.38 ± 6.02 <0.001
mPRK 21.66 ± 9.35* 28.96 ± 6.89 8.45 ± 5.27
Arm B tPRK 16.94 ± 12.93 25.74 ± 11.21 9.32 ± 6.25 <0.001
aaPRK 19.73 ± 8.75 30.43 ± 8.06** 12.13 ± 4.80*
  1. tPRK Transepithelial photorefractive keratectomy, mPRK Mechanical PRK, aaPRK Alcohol assisted PRK
  2. Based on three-day healing rate by random mixed-effect model adjusted for correlation of fellow eyes and follow-up times
  3. All data are presented as Mean ± SD (mm2/day)
  4. Bold values are statistically significant by random mixed-effect model adjusted for correlation of fellow eyes
  5. *P<0.05
  6. **P<0.01