Centre for Sensors, Universitat Politècnica de Catalunya, Barcelona, Spain.
J Cataract Refract Surg. 2010 Nov;36(11):1945-53. doi: 10.1016/j.jcrs.2010.05.029.
To evaluate the effect on vision of laser in situ keratomileusis (LASIK) based on preoperative optical quality.
Universitat Politècnica de Catalunya, Terrassa, and Barcelona Institute of Ocular Microsurgery, Barcelona, Spain.
Comparative case series.
The relative change in optical quality and visual acuity were evaluated in eyes that had LASIK for myopia. The optical quality was assessed before and 3 months after surgery using parameters provided by a double-pass system. Patients were classified into 4 groups by preoperative optical quality: low (Group 1), moderate (Group 2), high (Group 3), and very high (Group 4).
The study evaluated 25 patients (50 eyes). The optical quality parameters improved postoperatively in Group 1 and Group 2, with the improvement ranging from 15% to 21% and from 13% to 17%, respectively. The preoperative and postoperative optical quality in Group 3 was similar. The optical quality in Group 4 worsened significantly by percentages ranging from -20% to -26%. Although visual acuity had the same trend, there were no statistically significant changes.
The changes in optical quality after LASIK surgery depended on the patient's preoperative optical quality; visual acuity showed the same trend, although no change was significant.
评估基于术前光质量的激光原位角膜磨镶术 (LASIK) 对视力的影响。
西班牙加泰罗尼亚理工大学和巴塞罗那眼显微外科研究所。
对比病例系列。
评估了 LASIK 治疗近视的眼睛的光质量和视力的相对变化。使用双通系统提供的参数，在术前和术后 3 个月评估光学质量。根据术前光学质量，患者分为 4 组：低（第 1 组）、中（第 2 组）、高（第 3 组）和非常高（第 4 组）。
该研究评估了 25 名患者（50 只眼）。第 1 组和第 2 组的光学质量参数在术后得到改善，改善幅度分别为 15%至 21%和 13%至 17%。第 3 组的术前和术后光学质量相似。第 4 组的光学质量显著恶化，百分比范围为-20%至-26%。虽然视力也有相同的趋势，但没有统计学上的显著变化。
LASIK 手术后的光学质量变化取决于患者的术前光学质量；虽然视力也有相同的趋势，但没有变化是显著的。
