Pietilä Juhani, Huhtala Anne, Mäkinen Petri, Salmenhaara Kalle, Uusitalo Hannu
Department of Ophthalmology, Mehiläinen Hospital, Tampere and Helsinki, Finland; SILK, Department of Ophthalmology, School of Medicine, University of Tampere, Tampere, Finland.
Acta Ophthalmol. 2014 Nov;92(7):650-5. doi: 10.1111/aos.12333. Epub 2013 Dec 26.
To present the outcomes of laser-assisted in situ keratomileusis (LASIK) operations performed with the new three-dimensional, transportable FEMTO LDV Z6 I femtosecond laser (Ziemer Ophthalmic Systems, Port, Switzerland) and the Allegretto Wave Concerto 500 Hz excimer laser (Wavelight AG, Erlangen, Germany) in terms of accuracy, reproducibility and safety of flap creation.
This is a retrospective study of 309 consecutive eyes of 160 patients treated with the FEMTO LDV Z6 I for corneal flap creation. The target flap thickness was 90 μm. The size of the suction ring varied from 9.5 to 10.0 mm and target flap diameter from 9.3 to 9.6 mm, respectively. The target hinge length was 4.0 mm.
The FEMTO LDV Z6 I produced the 90-μm targeted flaps very consistently (mean 90.1 ± 2.7 μm, range 78-100). Mean flap diameter with the 9.3-mm target flap diameter was 9.3 ± 0.1 mm (range 9.0-9.6) and with the 9.6-mm target flap diameter 9.6 ± 0.1 mm (range 9.0-9.8). Mean hinge length was 3.9 ± 0.1 mm (range 3.3-4.2). Minor complications were reported in 15 (5%) eyes, but none of them prevented refractive laser treatment. The most common complications were bubbles in the conjunctiva (n = 7, 2%) and an opaque bubble layer inside the flap margin (n = 6, 2%). None of the eyes lost two Snellen lines of corrected distance visual acuity during 1-month follow-up.
In the hands of an experienced surgeon, the transfer from the Classic FEMTO LDV to Z6 I was a safe and straight forward process yielding accurate and reproducible flaps.
介绍使用新型三维、可移动的飞秒激光FEMTO LDV Z6 I（瑞士波特齐默眼科系统公司）和Allegretto Wave Concerto 500 Hz准分子激光（德国埃尔朗根威视光公司）进行准分子原位角膜磨镶术（LASIK）手术在制作角膜瓣的准确性、可重复性和安全性方面的结果。
这是一项对160例患者的309只连续眼睛进行的回顾性研究，这些眼睛使用FEMTO LDV Z6 I制作角膜瓣。目标瓣厚度为90μm。吸引环尺寸分别从9.5至10.0mm不等，目标瓣直径从9.3至9.6mm不等。目标铰链长度为4.0mm。
FEMTO LDV Z6 I非常稳定地制作出了90μm的目标瓣（平均90.1±2.7μm，范围78 - 100）。目标瓣直径为9.3mm时，平均瓣直径为9.3±0.1mm（范围9.0 - 9.6）；目标瓣直径为9.6mm时，平均瓣直径为9.6±0.1mm（范围9.0 - 9.8）。平均铰链长度为3.9±0.1mm（范围3.3 - 4.2）。15只（5%）眼睛报告有轻微并发症，但均未妨碍屈光性激光治疗。最常见的并发症是结膜下气泡（n = 7，2%）和瓣边缘内的不透明气泡层（n = 6，2%）。在1个月的随访期间，没有眼睛矫正远视力下降两行。
在经验丰富的外科医生手中，从经典的FEMTO LDV转换到Z6 I是一个安全且直接的过程，能制作出准确且可重复的角膜瓣。
