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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。
Objective: To study the effect and complications of LASIK after radial keratotomy. METHODS: This descriptive study was conducted at the LASIK Surgery Center in Yazd, Iran. Subjects included LASIK patients from April 2003 to September 2006. Data were collected on a special scale and analyzed using SPSS software and paired t-test. Results: There were 23 patients (33 eyes) with 11 women (48%) and 12 men (52%). The age ranged from 28 to 49 (mean, 31.6) years. When epithelial flap was made, two cases (6%) of patients had a radial corneal opening and one case (3%) of patients had moderate non-infectious keratitis. The preoperative equivalent spherical aberration was -2.17 ± 0.94D, while the postoperative equivalent spherical aberration was -0.17 ± 0.19D, showing statistically significant differences (P = 0.0001). The average preoperational uncorrected visual acuity (uncorrected visual acuity) was 0.07 ± 0.02, and 0.88 ± 0.16 postoperatively. There was a statistically significant difference (P = 0.0001). The average best corrected visual acuity was 0.93 ± 0.08 before surgery and 0.92 ± 0.08 after surgery. There was no statistically significant difference (P = 0.268). CONCLUSIONS: LASIK can improve residual myopia after radial keratotomy. There were no obvious complications during and after surgery. However, the necessity of secondary surgery must be carefully considered, and the related cases should be carefully selected and evaluated.