Dacryocystorhinostomy (DCR) is a surgical procedure that aims to restore the drainage of tears from the eye when the tear ducts are blocked.
Tears are produced to keep the eyes clean and moist. More tears are produced in response to cold, wind, smoke, injuries to the eye, or something in the eye (e.g. grit, an eyelash, etc.). Normally, tears drain from the eye into the lacrimal sac on the side of the nose, from which tear ducts carry them to the back of the nose and throat.
If a tear duct becomes blocked, tears cannot drain properly, leading to watery eyes, which are more prone to infections.
Dacryocystorhinostomy consists of creating a new drainage duct to bypass the blockage, thereby allowing the tears to drain normally again.
It is an intervention performed on an outpatient basis, with local anaesthesia and sedation.