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目的 探讨近视性角膜切削术后屈光回退再次手术 (RPRK )的临床疗效。 方法 回顾总结 6例 12眼随访半年以上的再次手术资料 ,用 t检验方法对 PRK及 RPRK术前术后视力、屈光度等情况进行分析。 结果 PRK和 RPRK术后视力都比术前有非常显著改善 (P<0 .0 1) ;PRK术后屈光度改善非常显著 (P<0 .0 1) ;RPRK术后屈光度改善显著 (P<0 .0 5 )。 结论 RPRK安全有效 ,但术后屈光回退率仍然较高。再次手术应以屈光状态稳定为前提
Objective To investigate the clinical effect of reoperation after corneal refractive surgery (RPRK). Methods The data of reoperation in 6 cases of 12 eyes who were followed up for more than six months were retrospectively reviewed. The visual acuity and refraction before and after PRK and RPRK were analyzed by t test. Results The postoperative visual acuity of both PRK and RPRK was significantly improved compared with that before operation (P <0.01), and the improvement of postoperative PRK was very significant (P <0.01). The refraction after RPRK was significantly improved (P <0. .0 5). Conclusions RPRK is safe and effective, but the rate of postoperative refractive regression is still high. Reoperation should be based on the premise of refractive stability