Lang G K, Schroeder E, Koch J W, Yanoff M, Naumann G O
Department of Ophthalmology, University of Erlangen-Nuernberg, West Germany.
Ophthalmic Surg. 1989 May;20(5):342-6.
An excimer laser at 193 nm was used with a new "open mask system" to perform elliptical noncontact and nonthermal keratoplasties and corneal grafts in human cadaver eyes (Part 1 of this article, Ophthalmic Surg 1989; 20:262-267). By light microscopy the corneas showed sharp, unbeveled cut margins with nearly perfect apposition of the inner wound aspects. An elliptical shape may be better than a circular one, since the former closely approximates the cornea's normal elliptical outline, making it easier to fit corresponding areas of corneal graft to bed. Also, it provides a wider area of Bowman's membrane for anchoring sutures and relatively less volume of donor antigenic tissue.
使用波长为193nm的准分子激光和一种新型“开放式掩膜系统”，在人类尸体眼睛上进行椭圆形非接触式非热角膜移植和角膜移植术（本文第1部分，《眼科手术》1989年；20:262 - 267）。通过光学显微镜观察，角膜切口边缘锐利、无斜面，内伤口面几乎完美贴合。椭圆形可能比圆形更好，因为前者更接近角膜的正常椭圆形轮廓，使得角膜移植片与植床的相应区域更容易匹配。此外，它为缝合线提供了更宽的Bowman膜区域，且供体抗原性组织的体积相对较小。
