Table 4.

Healing rate in arm A (n = 39 bilateral cases) and arm B (n = 33 bilateral cases)

	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*

tPRK Transepithelial photorefractive keratectomy, mPRK Mechanical PRK, aaPRK Alcohol assisted PRK

^†Based on three-day healing rate by random mixed-effect model adjusted for correlation of fellow eyes and follow-up times

All data are presented as Mean ± SD (mm²/day)

Bold values are statistically significant by random mixed-effect model adjusted for correlation of fellow eyes

*P<0.05

**P<0.01