intracanalicular nasolacrimal circumcision

The nasolacrimal duct circumcision in the lacrimal canal is suitable for obstruction of the nasolacrimal duct, and the symptoms of the nasolacrimal duct obstruction are changed by surgery. Treatment of diseases: lacrimal duct obstruction Indication Suitable for nasolacrimal duct obstruction. Contraindications The patient is too old and should be filled with poor general condition. Preoperative preparation 1. Prepare an epidural catheter or nylon wire and support wire. 2. Prepare a lumbar needle with an outer diameter of 1.6mm and an inner diameter of 1mm. If the lacrimal duct leads the needle to the bevel, the mouth end is sharper than the lacrimal lead, and it should be ground into a quick mouth. Surgical procedure 1. Use the No. 8 probe to dilate the punctum and the nasolacrimal duct. Insert the burr with the needle into the lacrimal passage to the obstruction of the nasolacrimal duct and withdraw the needle. Push the trephine while turning to the side until it passes through the obstruction. 2. Connect the syringe to rinse. If it is unobstructed, the support can be placed by intubation or hanging. complication Nasal pain.

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