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目的 :比较准分子激光屈光性角膜切削术 (PRK)和准分子激光原位角膜磨镶术(LASIK)治疗中低度近视的疗效。方法 :回顾分析经 2年以上随访 6 0 0度以下的 6 8例 (116眼 )PRK患者和 53例 (83眼 )LASIK患者的术后视力、屈光度的变化 ,以及对其并发症进行比较。结果 :PRK组术后 1周视力明显提高 ,6个月趋于稳定 ;LASIK组第 2天视力明显提高 ,1个月稳定 ;2年时PRK组有 95.2 %的患者达到术前矫正视力 ,LASIK组为 89.7% (P >0 .0 5) ,术后屈光度在± 1.0 0D以内的患者 ,PRK组有 90 .1% ;LASIK组有 81.3% (P >0 .0 5)。结论 :PRK和LASIK治疗中低度近视临床疗效均良好。PRK相对简单 ,风险较小 ;而LASIK设计合理 ,术后无痛苦 ,恢复较快 ,然而潜在一定的风险性 ,对于PRK治疗效果理想的中低度近视 ,尤其是低度近视的术式选择时 ,应全面考虑这些风险因素。
Objective: To compare the efficacy of excimer laser photorefractive keratectomy (PRK) and excimer laser in situ keratomileusis (LASIK) for the treatment of moderate and low myopia. Methods: The postoperative changes of visual acuity and refraction were retrospectively analyzed in 68 patients (116 eyes) with PRK and 53 cases (83 eyes) under 600 degrees of follow-up. The comparisons were made between the two groups. Results: The visual acuity of the PRK group was significantly increased at 1 week and stabilized at 6 months. The visual acuity of the PRK group was significantly increased at 1 day and stabilized at 1 month. In the PRK group, 95.2% of the patients achieved preoperative corrected visual acuity (LASIK) In the group of 89.7% (P> 0.05), postoperative refraction was within ± 1.0 0D, 90.1% in the PRK group and 81.3% in the LASIK group (P> 0.05). Conclusion: The clinical efficacy of PRK and LASIK in the treatment of middle and low myopia is good. PRK is relatively simple, the risk is small; and LASIK design, no postoperative pain, rapid recovery, but some of the potential risks for PRK treatment of low to moderate myopia, especially low myopia surgical options , Should fully consider these risk factors.