Jaais F, Dutton G N
Department of Ophthalmology, Faculty of Medicine, University Hospital, University of Malaya, Kuala Lumpur.
Ophthalmic Surg. 1992 Mar;23(3):210-4.
We studied by scanning electron microscopy the effects of the repeated use of a newly-designed, disposable, suction trephine (Microsurgical, Ltd, Bedfordshire, England) on the nature of the cut of successive corneal buttons from sheep eyes. After the trephine was used more than nine times, the cut edge became more irregular as successive buttons were produced. Also, progressively greater degrees of endothelial cells adjacent to the cut edge were lost. Although the corneal buttons initially were circular, those produced after the 20th cut became more oval. These results suggest that a disposable corneal trephine should be reused no more than nine times.
我们通过扫描电子显微镜研究了重复使用一种新设计的一次性吸环钻（英国贝德福德郡微外科有限公司）对从羊眼获取的连续角膜纽扣样组织切口性质的影响。在该环钻使用超过九次后，随着连续制作纽扣样组织，切口边缘变得更加不规则。而且，靠近切口边缘的内皮细胞损失程度逐渐增大。尽管角膜纽扣样组织最初是圆形的，但在第20次切割后制作的纽扣样组织变得更呈椭圆形。这些结果表明，一次性角膜环钻重复使用不应超过九次。
