This article explains the causes, symptoms, diagnosis, and treatment of a blocked tear duct. It also covers when DCR surgery may be needed to restore normal tear drainage.
Last Updated: 8/9/2026
Persistent watery eyes can sometimes be caused by a blocked tear duct, which prevents tears from draining normally from the eye into the nose. Tears may collect on the eye or run down the cheek, and some patients also develop discharge, irritation, or recurrent infection.
However, watery eyes do not always mean a tear duct blockage. Dry eye, eyelid problems, and eye-surface irritation can cause similar symptoms, so the underlying cause should be identified before treatment is chosen.
If persistent watery eyes are accompanied by discharge or redness, an assessment can help identify the cause. Contact Magrabi Health on WhatsApp to find the appropriate doctor or branch in the UAE.
This condition is a narrowing or closure in part of the tear drainage pathway that prevents tears from draining normally from the eye into the nose.
The blockage may be partial or complete and can affect the drainage opening, small tear channels, lacrimal sac, or nasolacrimal duct. A tear duct obstruction may therefore occur at different points within the lacrimal drainage system.
When drainage is reduced, tears can collect on the eye or overflow onto the cheek. This blocked tear drainage may also be associated with discharge, irritation, or inflammation.
The condition can develop for several reasons. In adults, age-related tear duct narrowing, chronic inflammation, recurrent infection, facial trauma, or scarring after eye, eyelid, sinus, or nasal surgery can interfere with the tear drainage system. These problems may lead to watery eyes, especially when tears cannot drain normally.
Other causes include:
Congenital nasolacrimal duct obstruction in babies.
Scarring that causes lacrimal duct obstruction.
Previous facial or nasal injury.
Chronic tear duct inflammation.
Changes within the nasolacrimal system.
Less commonly, an anatomical abnormality or mass along the drainage pathway.
A narrowed tear duct may cause partial symptoms, while an obstructed tear duct can produce more persistent difficulty with drainage. Persistent one-sided tearing deserves assessment because the cause of an obstruction of the tear duct should be identified rather than assumed.
Mayo Clinic explains in its article “Blocked Tear Duct: Symptoms and Causes” that age-related changes, inflammation, trauma, previous surgery, congenital obstruction, and less common structural causes can all contribute to tear duct blockage.
Diagnosis starts with a tear duct assessment based on the patient's symptoms, medical history, and a tear duct examination of the eye surface, eyelids, drainage openings, and surrounding tissues.
Depending on the findings, testing may include:
Dye disappearance testing: to assess how quickly tears drain.
Irrigation: to see whether fluid reaches the nose or flows back toward the eye.
Probing: to identify areas of tear duct narrowing.
Nasal examination: if a nasal cause is suspected.
CT or MRI: in selected cases when trauma, a mass, or an anatomical abnormality is possible.
The aim is to identify the location and degree of any lacrimal drainage obstruction and determine whether the patient has a partial blockage, complete blockage, or another tear drainage problem. Not every patient needs imaging or every diagnostic test.
Persistent or recurrent watering is the most common symptom. Symptoms can vary depending on where the tear drainage blockage occurs and whether infection is present.
Possible symptoms include:
Tears repeatedly running down the cheek.
Tears collecting on the eye.
Mucus or pus-like discharge.
Crusting around the eyelashes.
Recurrent eye irritation or infection.
Temporary blurred vision caused by excess tears.
Tenderness near the inner corner of the eye.
A swollen tear duct area beside the nose.
Symptoms may affect one or both eyes. Persistent watering mainly affecting one eye can suggest a localized drainage issue, although other eye conditions can cause similar symptoms. A blocked lacrimal drainage pathway is only one possible explanation, which is why examination matters.
Treatment depends on the patient’s age, the location and cause of the blockage, and whether the pathway is narrowed or completely closed.
Treatment options may include:
Treating infection or inflammation when present.
Observation in selected cases.
Tear duct massage in appropriate infants.
Dilation of a narrowed drainage opening.
Irrigation or probing.
Silicone intubation or stenting.
Balloon dilation in selected cases.
Tear duct surgery for severe or complete obstruction.
A partial tear duct blockage is not treated in the same way as complete nasolacrimal obstruction. The appropriate tear duct blockage treatment is selected after the location and severity of the problem are established.
For some patients, a minor tear drainage procedure can improve flow. Others may require a new tear duct opening or more extensive tear drainage surgery when the natural route cannot be restored.
Yes. Some cases of tear duct blockage can be treated without surgery, especially when the obstruction is partial or occurs in children.
Options may include irrigation, probing, dilation, balloon dilation, or silicone stenting. These approaches may be useful for a limited tear duct problem or selected cases of partial tear drainage obstruction.
Severe or complete blockage may require DCR surgery, particularly when simpler treatment is unlikely to provide durable drainage.
An infected tear duct can develop when stagnant tears and mucus collect behind an obstruction and bacteria multiply in the lacrimal sac. This infection is called dacryocystitis.
Signs of a tear duct infection may include:
Painful redness beside the nose.
A swollen tear duct or swollen lacrimal sac.
Yellow or green discharge.
Tenderness.
Fever.
Painful swelling, pus, or fever should be assessed promptly. Infection may need to be treated before the underlying tear duct obstruction is addressed.
Antibiotics can treat bacterial infection, but they do not usually remove a mechanical blockage. If the underlying problem is a blocked tear drainage system, infection can recur after treatment.
Surgery may be considered when the blockage is severe or complete, causes persistent tearing or recurrent infection, or cannot be adequately managed with a simpler procedure.
In adults with significant nasolacrimal duct obstruction, repeated irrigation may not create lasting drainage. In these cases, lacrimal duct surgery may be used to bypass the blocked segment instead of repeatedly trying to reopen it.
The surgical plan depends on the site of the blockage, nasal anatomy, previous procedures, and the results of the tear duct assessment.
DCR surgery, or dacryocystorhinostomy, is a form of lacrimal drainage surgery used for selected tear drainage obstruction cases. It creates a new connection between the lacrimal sac and the inside of the nose so tears can bypass the obstructed nasolacrimal duct.
A DCR procedure may be considered when the blockage causes:
Persistent tearing.
Tears running down the cheek.
Recurrent infection of the lacrimal sac.
Eye discharge.
Significant difficulty with drainage.
This type of dacryocystorhinostomy surgery is usually recommended only after the cause and location of the obstruction have been assessed.
There are two main approaches to DCR:
Approach | How It Is Performed | Main Difference |
External DCR | The surgeon reaches the lacrimal sac through a small incision beside the nose and creates a new drainage pathway. | It involves an external skin incision beside the nose. |
Endoscopic DCR | The surgeon creates the new pathway from inside the nose using an endoscope. | It is performed from inside the nose without an external skin incision. |
A temporary silicone tube may be used to support the new opening while healing occurs.
The choice between external DCR and endoscopic DCR depends on the level of blockage, nasal anatomy, previous surgery, and the surgeon’s assessment.
If persistent tearing or recurrent infection suggests a problem with the lacrimal drainage system, Magrabi Health UAE's Oculoplasty and Cosmetology service can assess the condition and determine whether observation, a minor procedure, or surgery is appropriate.
After tear duct surgery, patients may experience temporary swelling, bruising, or minor nasal bleeding.
A silicone tube may remain temporarily within the newly created pathway. Recovery instructions depend on the procedure performed.
Possible complications include:
Infection.
Nosebleeds.
Scar formation.
Recurrent narrowing.
Persistent watering.
The need for an additional procedure.
Some patients may require follow-up after tear drainage surgery to make sure the new pathway remains open. In selected cases, further lacrimal drainage surgery may be considered if significant narrowing returns.
Persistent tearing or recurrent discharge should be evaluated, especially when symptoms repeatedly return.
Seek faster medical assessment if there is:
Painful red swelling beside the nose.
Pus-like discharge.
Fever.
Spreading redness.
Severe eye pain.
A change in vision.
These findings may indicate an infection or another problem that needs prompt treatment rather than routine management of a tear drainage blockage.
Persistent tearing or recurrent discharge should be evaluated, especially when symptoms repeatedly return.
Seek faster medical assessment if there is:
Painful red swelling beside the nose.
Pus-like discharge.
Fever.
Spreading redness.
Severe eye pain.
A change in vision.
These findings may indicate an infection or another problem that needs prompt treatment rather than routine management of a tear drainage blockage.
If persistent tearing is accompanied by discharge or swelling near the inner corner of the eye, you can book an appointment by phone call or through the online booking form at Magrabi Health Hospitals for assessment and appropriate treatment planning.
A tear duct blockage can cause persistent watering, discharge, irritation, and recurrent infection, but not every watery eye is caused by a blockage.
Some forms of narrowing can be managed with relatively minor procedures, while severe or complete obstruction may require DCR surgery or another form of tear drainage surgery.
The most important step is a proper assessment to identify the location, cause, and severity of the blockage before treatment is selected.
Medically reviewed by Magrabi Health specialist doctors.
Medical Disclaimer: This article is intended for health education purposes only and is not a substitute for diagnosis or consultation with a qualified ophthalmologist.
Moorfields Eye Hospital – Epiphora: Diagnosis and Treatment
MedlinePlus – Blocked Tear Duct
