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目的 探讨屈光手术后中央岛、偏中心、不规则散光、多中心切削等并发症对眼波阵面像差的影响。方法 进行一项回顾性的临床研究 ,对接受 L ASIK手术术后发生各种并发症的 2 5例患者 (2 9只眼 )的眼波阵面像差进行了评估。采用主观性波阵面像差仪对眼波阵面像差进行了测量与比较。检查结果通过 Madlab软件分析 ,直接获取 35项 Zemike系数及每阶 Zemike系数的 RMS值。结果 无并发症组患者术前最佳矫正视力 (BCVA)是 1.0 1± 0 .12 ,术后 3月 BCVA为 0 .99± 0 .14 ;并发症组患者术前 BCVA是 1.0 2± 0 .0 9,术后 BCVA为 0 .6 1± 0 .2 4。术前眼波阵面像差的 RMS值为 0 .6 5μm ,术后无并发症组为 1.5 1μm;而中央岛组的 RMS值为 6 .78μm ;偏中心组为 7.94μm;不规则散光组为 9.32μm ;多中心切削组为 7.2 9μm。结论 L ASIK术中术后所致的并发症可导致眼波阵面像差数倍的增加 ,严重影响患者术后的视觉质量
Objective To investigate the effects of central island, eccentric center, irregular astigmatism, multicenter cutting and other complications on the wavefront aberration after refractive surgery. Methods A retrospective clinical study was conducted to evaluate the wavefront aberrations in 25 patients (29 eyes) who underwent various complications of L ASIK surgery. Subjectivity wavefront aberrometer was used to measure and compare the wavefront aberrations. The test results were directly analyzed by Madlab software to directly obtain 35 Zemike coefficients and RMS values of Zemike coefficients of each order. Results The preoperative best corrected visual acuity (BCVA) was 1.0 1 ± 0.12 in patients without complication, and was 0.99 ± 0.14 in 3 months after operation. The preoperative BCVA in complication group was 1.0 2 ± 0. 0 9, postoperative BCVA was 0.61 ± 0.24. The RMS value of preoperative wavefront aberration was 0.56 μm and the postoperative morbidity was 1.5 1 μm. The RMS value of central island group was 6.78 μm and that of eccentric group was 7.94 μm. The irregular astigmatism group was 9.32μm; multi-center cutting group was 7.29μm. Conclusions Postoperative complications caused by LASIK can lead to several-fold increase in the wavefront aberration of the eye and seriously affect the postoperative visual quality