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Table 2 Postoperative symptoms 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

  Day Method Pain FBS Burning Photophobia Tearing Dry eye
Arm A 1 tPRK 4.18 ± 3.68* 5.38 ± 3.64** 4.54 ± 3.32* 6.67 ± 3.40 5.77 ± 3.76 3.13 ± 3.30
mPRK 2.49 ± 3.15 2.77 ± 3.23 3.31 ± 3.14 6.31 ± 3.51 5.10 ± 3.63 2.85 ± 3.00
3 tPRK 2.21 ± 2.34 3.21 ± 3.00 2.90 ± 3.11 5.15 ± 3.00 3.08 ± 2.64 2.56 ± 2.76
mPRK 1.85 ± 2.13 2.85 ± 2.67 2.90 ± 3.08 5.08 ± 2.97 2.79 ± 2.53 2.62 ± 2.65
7 tPRK 0.37 ± 0.83 0.58 ± 1.07 0.37 ± 0.68 1.68 ± 1.70 0.16 ± 0.50 2.83 ± 1.98
mPRK 0.53 ± 1.43 0.79 ± 1.55 0.26 ± 0.65 1.68 ± 1.77 0.26 ± 0.65 3.06 ± 2.01
Arm B 1 tPRK 5.52 ± 3.89** 5.94 ± 3.61* 5.73 ± 3.92** 5.30 ± 3.60 5.09 ± 3.20 3.61 ± 3.56
aaPRK 3.21 ± 3.18 4.27 ± 3.44 3.91 ± 3.31 5.18 ± 3.55 4.73 ± 3.40 3.39 ± 3.40
3 tPRK 3.45 ± 3.12 3.82 ± 3.32 2.97 ± 2.87 5.21 ± 3.26 3.18 ± 3.12 3.88 ± 3.42
aaPRK 3.24 ± 2.67 3.94 ± 2.91 3.15 ± 2.88 5.33 ± 3.13 3.09 ± 3.06 3.91 ± 3.37
7 tPRK 0.64 ± 1.74 0.71 ± 1.64 0.86 ± 1.75 2.79 ± 2.97 0.36 ± 1.34 3.93 ± 2.06
aaPRK 0.50 ± 1.40 1.21 ± 2.64 1.79 ± 2.69 3.36 ± 3.15 0.86 ± 1.99 3.93 ± 2.02
  1. FBS Foreign body sensation, tPRK Transepithelial photorefractive keratectomy, mPRK Mechanical PRK, aaPRK Alcohol-assisted PRK
  2. Data are presented as Mean ± SD
  3. Bold values are statistically significant
  4. *P<0.01
  5. **P<0.001