Conjunctivocystorhinostomy with Drainage by Jones’ Method

Overview

In extensive obstruction of both lacrimal canals the present most frequently usedmethod is conjunctivocystorhinostomy using Jones’ drainage cannula. In this type of bypassoperation the palpebral aperture is connected with the nasal cavity by a hollow drainage cannulathrough which the tears flow from thre palpebral aperture. The effectivity of the procedure is 85 -90%. The drainage cannulae can be straight or bent and are as a rule made from pyrex glass orsilicone. Patients should be highly motivated and must be made familiar with possible complications- most frequently slipping of the cannula. With regard to the necessary postoperative cooperation,the operation is not recommended for young children.The authors implemented in 1996 - 1998 a total of 14 conjunctivocystorhinostomies and useda combined approach: the lacrimal sac is opened into the nose by the endonasal route under generalanaesthesia, the cannula is inserted from an external approach. In one instance a straight siliconecannula was used, in the remaining patients a bent silicone cannula. In two instances loss of thecannula occurred. In 10 instances after surgery objective and subjective improvement was recordedand mitigation or regression of complaints. The authors evaluate the initial experience with thistype of operation as satisfactory and encouraging.

Key words:
canalicular obstruction, conjuncticocystorhinostomy, bypass, Jones’ cannula.