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随着显微手术技术的进步、精确的生物统计学(biometry)和人工晶状体植入,白内障术后视力的恢复已有显著改进。因此,术后致成角膜散光对视力的恢复已成为主要问题. 作者采用一种新的角膜切口方法为154例患者做了白内障囊外摘出结合前房或后房晶体植入术,所有角膜伤口缝合是在角膜散光计测量的控制下进行的。先用美蓝画出切口轮廓(图1),切口水平段入刀线在结膜附着缘后1.0～2.0mm,具体距离视角巩膜连接处宽度而定。囊内摘出术时,切口水平段以及与之成角的两臂长度均为4 mm,而囊外摘出时则减至3mm,两端的垂直段切口在囊内、囊外摘出术中均为1mm。
With the advancement of microsurgical techniques, accurate biometry and intraocular lens implantation, visual acuity recovery has been significantly improved after cataract surgery. Therefore, postoperative corneal astigmatism on the restoration of visual acuity has become a major problem. The author of a new method of corneal incision for 154 patients with extracapsular cataract extraction and anterior chamber or posterior chamber lens implantation, all corneal wounds Suturing was performed under the control of corneal astigmatism measurements. Draw the outline of the incision first with blue (Figure 1), the incision level into the knife line in the conjunctiva attached edge 1.0 ~ 2.0mm, the specific distance from the perspective of the scleral junction width may be. In the intracapsular excision, the horizontal incision length and the length of the two arms angled with it were both 4 mm, while the extracapsular removal rate was reduced to 3 mm. The vertical incision at both ends was in the capsule and the extracapsular extraction was 1 mm .