IROC AG, Zurich, Switzerland.
J Refract Surg. 2010 Oct;26(10):S833-40. doi: 10.3928/1081597X-20100921-12.
To demonstrate the feasibility and technical features of the WaveLight FS200 femtosecond laser (WaveLight GmbH) in refractive and corneal laser surgery.
The reproducibility of femtosecond laser-created flap dimensions and channels used for corneal ring segment implantation were measured by means of an optical coherence tomography system in porcine corneas. The increase in the intraocular pressure (IOP) during applanation with the corneal interface was measured by means of an IOP sensor. The possibility of creating a channel for gas diffusion within the stroma was investigated to minimize opaque bubble layer formation.
The technical features, such as optical design, pulse energy, and scanning algorithms at a high repetition rate, allow reproducibility for tissue cutting with a standard deviation of <10 μm in depth and 0.1 mm laterally. Intraocular pressure increases up to 150 mmHg during applanation. The use of a gas channel minimizes the creation of an opaque bubble layer during the femtosecond laser procedure.
The WaveLight FS200 femtosecond laser provides a high reproducibility for cutting three-dimensional tissue structures. The IOP increase is comparable to other microkeratomes and femtosecond lasers. The minimized opaque bubble layers allow the surgeon to perform an excimer laser treatment immediately after FS200 flap creation.
展示 WaveLight FS200 飞秒激光（WaveLight GmbH）在屈光性和角膜激光手术中的可行性和技术特点。
通过光学相干断层扫描系统在猪眼角膜上测量用于角膜环段植入的飞秒激光制作的瓣尺寸和通道的可重复性。通过眼压传感器测量压平角膜界面时眼压（IOP）的升高。研究了在基质内创建用于气体扩散的通道的可能性，以最大限度地减少不透明气泡层的形成。
该技术具有光学设计、脉冲能量和高重复率下的扫描算法等特点，允许组织切割具有<10μm 的深度和 0.1mm 的横向标准偏差的可重复性。压平过程中眼压升高高达 150mmHg。使用气体通道可最大限度地减少飞秒激光手术过程中不透明气泡层的形成。
WaveLight FS200 飞秒激光可高度重现性地切割三维组织结构。眼压升高与其他微型角膜刀和飞秒激光相当。最小化的不透明气泡层允许外科医生在 FS200 瓣制作后立即进行准分子激光治疗。
