[Retracted] A Prospective, Randomized, Double-Masked Controlled Clinical Trial of Postoperative Pain after Transepithelial Photorefractive Keratectomy (Trans-PRK)

Table 3

Postoperative pain scores in different age groups (n = 370 eyes) ().

	Adolescent	Young adult	t	value
Pain scores at the end of surgery	2.38 ± 1.98	3.10 ± 2.39	−2.38	0.02
Pain scores on first postoperative day	1.79 ± 1.79	2.43 ± 2.45	−2.09	0.04
Pain scores on second postoperative day	0.68 ± 1.14	0.83 ± 1.3	−0.97	0.34
Pain scores on third postoperative day	0.13 ± 0.35	0.31 ± 1.19	−1.29	0.20

Approximate t-test.