目的:研究放射状角膜切开术后LASIK手术的效果和并发症。方法:本描述性研究在伊朗亚兹德LASIK手术中心进行,研究对象包括2003-04/2006-09的LASIK手术患者。数据通过特殊的量表收集,并采用SPSS软件和配对t检验进行分析。结果:患者23例33眼,其中女11例(48%),男12例(52%)。年龄介于28 ～49(平均31.6)岁。制上皮瓣时发现2例(6%)患者有放射状角膜开口和1例(3%)患者有中度非传染性角膜炎出现。术前等效球差为-2.17±0.94D,而术后等效球差为-0.17±0.19D,两者在统计学上具有显著性差异(P=0.0001)。术前平均裸眼视力(裸眼视力)为0.07±0.02,术后则为0.88±0.16,两者在统计学上具有显著性差异(P=0.0001)。手术前平均最佳矫正视力为0.93±0.08,而手术后为0.92±0.08,两者在统计学上不具有显著性差异(P=0.268)。结论:LASIK手术能改善放射状角膜切开术后残留的近视,术中和术后观察发现没有发生明显的并发症,但必须认真思考二次手术的必要性,同时小心选择和评估相关病例。

AIM:To study the results and complications of LASIK surgery after radial keratotomy.·METHODS: This descriptive study was carried out in Yazd LASIK Center, Yazd, Iran. Cases included all patients who had been operated between April 2003 and Septem-ber 2006. Data were collected via a special questionnaire and analyzed by SPSS software and paired t-test. ·RESULTS: Samples included 33 eyes of 23 patients of whom 11 (48%) were women and 12 (52%) were men. Their age ranged from 28 to 49 years old and the mean age was 31.6 years old. Two cases (6%) had openings of the previous radial keratotomy incisions during flap lifting and one case (3%) had moderate non-infec-tious keratitis. The mean preoperative spherical equivalent (SE) was -2.17±0.94D, while the posto-perative SE was -0.17±0.19D, the difference of which was significant (P=0.0001). Mean preoperative uncorrected visual acuity (UCVA) was 0.07±0.02 and the postopera-tive was 0.88±0.16, the difference of which was also significant (P=0.0001). The mean best spectacle correct-ed visual acuity prior to the operation was 0.93±0.08 and 0.92±0.08 after the operation, the difference of which was not significant (P=0.268).·CONCLUSION: LASIK surgery could improve residual myopia after the radial keratotomy without major complications during or postoperation, but necessity of the second procedure must be pondering and require careful case selection and assessment.

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