Schiffer H P, Busse H
Klin Monbl Augenheilkd. 1978 Sep;173(3):386-91.
The conservation of the tear ducts, as well as their partial conservation, must be considered when operating on smaller tumors, depending on the clinical picture and the histological aspect. However, the preparation should be done under magnification to facilitate delineation of the borders of the tumor and to immediately recognize when the tear ducts are opened. The histological description of the kind of tumor and the answer to the question of excision into the healthy tissue decide the further procedure. The placing of an indwelling tear duct probe in the form of a supramid thread or of a polyethylene tube has proved favorable. In case partial resection of the peripheral parts of the canal system is necessary, the remains of the posterior wall of the vertical or horizontal part of the canaliculus must be opened with Vanna's scissors. The remaining vertical or horizontal part of the canaliculus does not lose its suctionpressure pump capillarity when it is opened, but ensures tear drainage.
在对较小的肿瘤进行手术时，必须根据临床表现和组织学特征考虑泪道的保留以及部分保留情况。然而，手术准备应在放大条件下进行，以便于勾勒肿瘤边界，并能在泪道被打开时立即识别。肿瘤类型的组织学描述以及关于是否切除至健康组织问题的答案决定了后续步骤。事实证明，以Supramid线或聚乙烯管形式留置泪道探针是有利的。如果需要对泪道系统的周边部分进行部分切除，则必须用万纳剪刀打开泪小管垂直或水平部分后壁的残余部分。泪小管剩余的垂直或水平部分在打开时不会失去其吸引压力泵的毛细作用，而是能确保泪液引流。
