Tong P P, Kam J T, Lam R H, Leung W K, Woo V C, Chow P C, Hung S O, Wong W F, Wong T W
I-Centre, Kowloon, Hong Kong.
J Cataract Refract Surg. 1995 Mar;21(2):150-5. doi: 10.1016/s0886-3350(13)80502-0.
In this study, 108 eyes of 62 patients had photorefractive keratectomy (PRK) with a 193 nm excimer laser to correct myopia. The eyes were assigned to one of three groups: low, moderate, or high myopia. Six months after PRK, 88.9% of eyes in the low myopia group, 90.0% in the moderate myopia group, and 23.8% in the high myopia group achieved an uncorrected visual acuity of 20/40 or better. In the low myopia group, 88.9% were within +/- 1 diopter (D) of attempted correction, as were 70.0% in the moderate group and 18.8% in the high myopia group. There were no significant complications. We conclude that excimer laser PRK appears to be a safe and relatively accurate procedure to correct low to moderate myopia but not high myopia because of regression over time.
在本研究中，62例患者的108只眼睛接受了用193纳米准分子激光进行的准分子激光原位角膜磨镶术（PRK）以矫正近视。这些眼睛被分为三组之一：低度、中度或高度近视。PRK术后六个月，低度近视组88.9%的眼睛、中度近视组90.0%的眼睛以及高度近视组23.8%的眼睛达到了20/40或更好的未矫正视力。在低度近视组中，88.9%的眼睛在预期矫正度数的±1屈光度（D）范围内，中度近视组为70.0%，高度近视组为18.8%。未出现显著并发症。我们得出结论，准分子激光PRK似乎是一种安全且相对准确的矫正低度至中度近视的手术，但由于随着时间推移会出现回退，所以不适用于高度近视。
