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Overview dacryocystorhinostomy ("DCR")

For patients with blocked tear duct, the usual cause of a watering eye

The tears normally drain from the corner of the eye close to the nose, via tiny puncta into the very fine lacrimal drainage channels (canaliculi). The tears go into the lacrimal sac, then down the nasolacrimal duct which lies in a bony canal, then opens into your nose. You are not aware of the tears draining into your nose and these go down into the throat.

The most common cause of watering eyes is a blocked nasolacrimal duct. Surgery to overcome this blockage is called "dacryocystorhinostomy" or DCR.

In order to confirm the site of the obstruction causing the watering, lacrimal syringing and gentle probing is done.

The aim of this operation is to relieve a watery, sticky eye caused by blockage of the tear duct (nasolacrimal duct) situated between the tear sac (lacrimal sac) at the corner of the eye and the tear outflow passage into the back of the nose.

DCR consists of creating a direct connection between the tear sac into the nose, bypassing the blockage and allowing tears to drain normally again. Usually some soft silicone tubes are placed, which are removed about two months after surgery.

There are two methods of doing this:

  1. Externally (from the outside, via a short skin incision)
  2. Internally (from inside the nose: endonasal endoscopic)