Department of Ophthalmology, Mehiläinen Hospital, Tampere, Finland.
J Refract Surg. 2010 Jan;26(1):7-16. doi: 10.3928/1081597X-20101215-02. Epub 2010 Jan 11.
To present the flap characteristics and short-term efficacy and safety of 787 consecutive LASIK procedures with the FEMTO LDV femtosecond laser (Ziemer Ophthalmic Systems) for the treatment of refractive errors.
Seven hundred eighty-seven consecutive eyes of 405 previously non-operated patients were treated with the FEMTO LDV. Intended flap thickness was 110 microm and intended flap diameter varied from 8.5 to 9.5 mm. Refractive treatment was performed with the WaveLight ALLEGRETTO WAVE Concerto 500 Hz excimer laser. All eyes were wavefront-optimized.
The mean flap thickness, measured by ultrasound pachymetry, was 90.0+/-5.5 microm (range: 67 to 107 microm) in right eyes and 90.1+/-4.6 microm (range: 77 to 106 microm) in left eyes. Mean flap diameter was 9.1+/-0.2 mm (range: 8.4 to 9.9 mm) in right eyes and 9.1+/-0.2 mm (range: 8.0 to 10.0 mm) in left eyes. Increasing flap thickness was correlated with increasing corneal thickness in right eyes and flatter keratometric value K(1) in left eyes. The most common complication was minor bleeding during the procedure (12.7%). All other complications were rare (8.4%), and none prevented further laser ablation.
The Ziemer FEMTO LDV laser created thinner LASIK flaps than intended but with a low standard deviation and minimal intraoperative complications.
介绍使用 FEMTO LDV 飞秒激光（Ziemer 眼科系统）治疗屈光不正的 787 例连续 LASIK 手术的皮瓣特征、短期疗效和安全性。
405 例未经手术的患者的 787 只眼接受了 FEMTO LDV 的治疗。预期的瓣厚度为 110 微米，瓣直径从 8.5 到 9.5 毫米不等。使用 WaveLight ALLEGRETTO WAVE Concerto 500Hz 准分子激光进行屈光治疗。所有眼睛均进行了波前优化。
右眼角膜厚度超声测量的平均瓣厚度为 90.0+/-5.5 微米（范围：67 至 107 微米），左眼为 90.1+/-4.6 微米（范围：77 至 106 微米）。右眼角膜厚度超声测量的平均瓣直径为 9.1+/-0.2 毫米（范围：8.4 至 9.9 毫米），左眼为 9.1+/-0.2 毫米（范围：8.0 至 10.0 毫米）。瓣厚度的增加与右眼角膜厚度的增加和左眼更平坦的角膜曲率值 K（1）有关。最常见的并发症是术中轻微出血（12.7%）。所有其他并发症都很少见（8.4%），且均不影响进一步的激光消融。
Ziemer FEMTO LDV 激光产生的 LASIK 瓣比预期的薄，但标准差低，术中并发症少。
