Draeger J
Klin Monbl Augenheilkd. 1975 Sep;167(3):353-9.
The demands on the precision of the operative incision are in lamellar keratoplasty much higher as in the total thickness graft. Besides the accurate limitation of the size of the graft, a lamellar dissection must be performed, by which the quality of the dissection must be as high as possible, in order to give an acceptable optical result. The depth of cut must be constant, and, above all, the surface of the cut must be absolutely smooth. A new semi-automatic, electrically-driven keratome with very exact micrometer -- adjustment allows for the first time a continuous cut without changing the direction of movement of the knife. A special construction allows use with the operation microscope, so that the surgeon can follow the whole cutting operation. With many illustrations the new instrument is shown in construction, function, and clinical application.
与全层移植相比，板层角膜移植术对手术切口精度的要求要高得多。除了精确限定植片大小外，还必须进行板层剖切，并且剖切质量要尽可能高，以便获得可接受的光学效果。切割深度必须恒定，最重要的是，切割面必须绝对光滑。一种新型半自动电动角膜刀具有非常精确的微米级调节功能，首次实现了在不改变刀具移动方向的情况下连续切割。其特殊的构造允许与手术显微镜配合使用，这样外科医生可以全程观察切割操作。文中通过多幅插图展示了这种新器械的构造、功能及临床应用。
