Secondary Tube Placement

The secondary tube placement is performed if DCR failed and with canalicular surgery. The tube placement is easier to perform because of less hemorrhage and more consistent (solid) tissues between the medial canthus and nasal cavity following surgery and the bone window was carried out in previous surgery. A tube can be placed if the bone window has been made wide enough for the tunnel to be performed.

The procedure is performed under general or local anesthesia and the tube is placed in the same manner as the primary procedure.

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Essentials of Human Physiology

Essentials of Human Physiology

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