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Dacryocystorhinostomy (DCR)

Reviewed by: Dr. Ali Bazzai

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August 5, 2024

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What You’ll Read in This Article

Dacryocystorhinostomy Dacryocystorhinostomy is a surgery that aims to reduce fluid and mucus retention inside the lacrimal sac. It increases tear drainage to relive epiphora. Dacryocystorhinostomy surgery can be done in

Dacryocystorhinostomy

Dacryocystorhinostomy is a surgery that aims to reduce fluid and mucus retention inside the lacrimal sac. It increases tear drainage to relive epiphora. Dacryocystorhinostomy surgery can be done in an endonasal or external approach. Both approaches allow tears to directly drain from the canaliculi into the nasal cavity via a new low-resistance pathway.

Dacryocystorhinostomy overview

A dacryocystorhinostomy (DCR) is a type of surgery that makes a new hole to enable the lacrimal sac to drain freely into the nose. This surgery is done when the tear duct which is responsible to drain the lacrimal sac gets blocked and prevents the drainage of tears away from the lacrimal sac. A patient that suffers from a blocked tear duct often has epiphora) excess tearing) or recurrent eye infection. It means that the tears spill out because they cannot drain from the eyes into the back of the nose. The patient may also experience inflamed and enlarged lacrimal sacs and infections and inflammation around the eyes.

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Causes of a blocked tear duct

Blocked ducts can occur at any age. The causes include: – Congenital blockage Many infants are born with this condition because their tear drainage system is not fully developed. – Age-related changes As individuals age the tiny openings that drain tears may get slender or the nose can barricade the tear ducts.

– Injury or trauma Damage to the face can lead to bone injury or scarring near the drainage system and interpret the regular tear flow through the ducts. Even, slack skin cells or small particles of dirt camped in the duct can cause a blockage. – Infection or inflammation Chronic infection or inflammation of your eyes or nose may cause the blockage of tear ducts and make the dacryocystorhinostomy necessary.

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– Inflammatory conditions Disorders that lead to swelling such as granulomatosis with polyangiitis or sarcoidosis can increase the risk of tear duct blockage. – Cancer treatments Chemotherapy medication and radiation treatment are done for cancer and can lead to a blocked tear duct.

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How is dacryocystorhinostomy done?

External dacryocystorhinostomy may be done under general anesthesia or monitored sedation. The surgeon makes a curvilinear incision at the level of medial canthal tendon and extends it into the thin skin of the lower lid. The incision is approximately 10 to 12 mm. your face is already prepped and draped in the sterile fashion. Surgeons often place a lubricated protective lens on the ocular surface to preserve the globe during the surgery. The surgeon incises your skin with a 15-blade scalpel or monopolar unit. Then he/she holds the orbicularis muscle fibers apart until the periosteum of the anterior lacrimal crest is detected. To avoid bleeding, the cut should be lateral to the angular vessels.

Next, the surgeon incises the periosteum along the anterior lacrimal crest from the level of the medial canthal tendon and developes it inferiorly and widely elevates the periosteum with elevators anteriorly off your nasal bone. The surgeon similarly elevates posterolaterally off the lacrimal sac fossa. Then, the surgeon carefully perforates the fossa where the bone things at the suture line. He/she uses a high-speed drill or rongeurs to remove the bone of lacrimal fossa. The surgeon removes a bony ostium (roughly 15 mm) and takes care to avoid the underlying nasal mucosa or cerebrospinal fluid leak.

Next, the surgeon passes a probe into the lacrimal sac and uses scissors to open it from the duct to the fundus. He/she removes any abnormal scar, lacrimal sac stones, or masses and makes a corresponding incision in the nasal mucosa to create flaps. After the surgeon sutures the flaps, he/she makes a new pathway into your nose and closes the orbicularis muscle and skin.

This approach has excellent success rates, reported to be up to 90-95%. However there is another type of dacryocystorhinostomy called endonasal DCR. In endonasal or endoscopic dacryocystorhinostomy there is no scarring. Instead, the surgeon uses a nasal endoscope on which a tiny camera is attached. The surgical tools are attached to the endoscope and sent to the area via it. The surgery is performed under the conduction of the images on the monitor sent by the endoscope.

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TebMedTourism Company is an International healthcare facilitator based in Tehran, Iran. We start our professional activity in medical tourism industry regarding the profound capability of Iran in both healthcare & touristic fields. We are ready with open arms to provide desirable services to our dear patients & guests from all over the world to enjoy world-class treatment quality and highly skilled doctors in Iran. TebMedTourism company is cooperating with more than 40 internationally certified hospitals, 140 selected local hospitals, 300 specialized medical centers, 430 doctors, 112 hotels, domestic and international airlines in Tehran, Shiraz, Mashhad, Tabriz, Qom and other cities in Iran. TebMedTourism team facilitate comprehensive medical & cosmetic packages in all medical & wellness & touristic fields aimed to achieve your desires. TebMedTourism experienced team will make this procedure seamless and enjoyable from A to Z, so you will just focus on your recovery.