| 2 | Photorefractive keratectomy in the correction of astigmatism using Schwind Amaris 750s laser显示文摘AIM: To evaluate the results of three photorefractive keratectomy (PRK) procedures in the treatment of astigmatism. · METHODS: In this retrospective comparative case series, 89 eyes of 50 patients who underwent PRK treatment for astigmatism were enrolled. The patients were divided into 3 groups based on the PRK procedure: Group 1: PRK without mitomycin -C (MMC) application, Group 2: PRK with MMC application, and Group 3: Trans-Photorefractive Keratectomy (T-PRK). The efficacy, safety, predictability, and complications of treatment were assessed at 1, 3 and 6 months after the treatment. ·RESULTS: At postoperative 6 months, the percentage of postoperative uncorrected visual acuity (UCVA) of 20/ 20 or better was 55.6% (20 eyes) in group 1, 75% (15 eyes) in group 2, and 75.8% (25 eyes) in group 3 (P = 0.144). The percentage of postoperative best corrected visual acuity (BCVA) of unchanged or gained ≥1 lines was 80.6% (29 eyes) in group 1, 70% (14 eyes) in group 2, and 90.9% (30 eyes) in group 3 (P =0.151). The percentage of postoperative BCVA of lost ≥2 lines was 11.1% (4 eyes) in group 1, 20% (4 eyes) in group 2, and 6.1% (2 eyes) in group 3. The mean manifest refractive spherical equivalent (MRSE) and mean cylindrical refraction were not significantly different among the each groups (P >0.05). At postoperative 6 months, the percentage of MRSE of within ±0.50 D was 100% (36 eyes) in Group 1, 100% (20 eyes) in Group 2, and 93.9% (31 eyes) in Group 3. At the each follow-up period, there was no significant difference in number of eyes with haze and mean haze score(P>0.05). ·CONCLUSION: The study showed that PRK without MMC, PRK with MMC and T-PRK appears to have similareffectiveness, safety and predictability in the treatment of astigmatism. The incidence of haze was also similar between the three groups. | Okkes Baz Necip Kara Ercument Bozkurt Engin Bilge Ozgurhan Alper Agca Kema Yuksel Yavuz Ozpinar Ahmet Demirok | 2013 | International Journal of Ophthalmology(English edition)2013，6，3： | 1 |
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