What Is a Blocked Tear Duct?

A blocked tear duct is a partial or full blockage of the pathway draining tears into the nose, causing constant watering and repeated infections. This thin channel starts at small openings on the inner eyelid edge, passes through the tear sac and opens into the nose; a narrowing anywhere along it can cause similar complaints. Op. Dr. Anıl Kaya, an eye surgeon (ophthalmologist) in Istanbul, assesses this complaint on examination to clarify where and how severe it is.

Who it affects: congenital in babies, or age-, trauma- or inflammation-related in adults. Is it treatable: yes, monitoring or surgery may be used depending on the case. Severity: it rarely threatens sight but can cause repeated infections. Which specialist: an ophthalmologist.

Tears normally moisten the eye's surface, then drain into the nose through small channels. A narrowing or blockage anywhere along this route makes tears build up, causing constant watering and sometimes inflammation. The pathway starts at tiny openings on the eyelid margin, continues through narrow channels into the tear sac, then through a duct opening into the nose; the blockage can occur at a single point or several levels at once.

The most common symptoms are constant or recurrent watering (epiphora), sticky discharge and crusting at the eyelid margin, redness, tenderness and swelling at the inner corner of the eye, and sometimes repeated infections. Watering usually stands out in windy or cold weather and during close work such as reading. Discharge on gentle pressure over the tear sac suggests the blockage lies in that area. In advanced cases, repeated inflammation of the sac (dacryocystitis) can develop, causing a painful, red swelling, sometimes with fever. In babies, the usual sign is constant watering and sticky discharge at the eyelid margin soon after birth, in one eye or both. In adults, the complaint typically builds up gradually — occasional watering at first, later frequent enough to affect daily life; frequent fogging of glasses or watering that smudges make-up are often the first signs noticed.

Known causes include a congenital lack of duct development (in babies, usually an unopened membrane at the duct's lower end), age-related narrowing, past inflammation, trauma (especially nasal bone or peri-orbital fractures), sinus problems, long-term medication use, and rare structural anomalies. The most common cause in adults is a narrowing where the duct opens into the nose, usually progressing slowly from mild to noticeable watering. Past sinusitis or nasal surgery can also affect the duct. Loose eyelid structure can also make it harder for tears to reach the drainage opening, producing a similar picture — here the blockage lies not in the duct but in how tears reach it. Repeated eye inflammation can thin the duct wall or cause adhesions, setting the stage for lasting narrowing.

An evaluation is recommended if watering lasts longer than a few weeks, is accompanied by recurrent redness and discharge, or a painful swelling develops at the eye's inner corner. In babies, watering continuing from the first months and turning into sticky discharge also calls for evaluation; redness, swelling or fever call for care without delay. In adults, sudden enlargement of the swelling, or marked pain or redness, can point to a developing infection and needs faster evaluation.

Diagnosis is made through an eye examination assessing the duct's patency, with simple tests if needed. This helps determine the degree and location of the blockage. The drainage openings on the eyelid margin are checked visually, and gentle pressure over the tear sac shows whether discharge appears — an initial clue to whether the blockage is in the sac or further down the duct. If needed, tests such as duct irrigation assess patency in more detail. In babies, diagnosis relies largely on family history and examination findings; most congenital blockages need no further imaging.

In mild cases without recurrent inflammation, monitoring can be enough. Recurrent infection or marked discomfort calls for treatment; left untreated, inflammation can continue. Since many congenital blockages in babies open on their own within the first year, the initial approach is usually monitoring and supportive measures; if there is no improvement, surgical evaluation follows. In adults, the blockage rarely opens on its own, so the treatment decision is usually made earlier for a recurring complaint.

The treatment approach depends on the degree and location of the blockage: monitoring and supportive measures (massage, warm compresses) may suffice in mild cases; less invasive options such as syringing and probing suit partial blockages; a surgical approach may be needed for lasting, advanced blockages — covered in detail on the tear duct treatment page. In babies, the initial approach is usually monitoring and massage, since the duct can open on its own at this age. In adults, the level of the duct where the blockage lies affects the approach chosen; a narrowing at the nasal opening and a blockage in the sac itself can call for different methods. Controlling any recurrent inflammation can be the first step of the plan.

For treatment options for this complaint, see the tear duct treatment page.

When assessing a blocked tear duct, Op. Dr. Anıl Kaya first clarifies the degree of the blockage and whether it is causing inflammation, then bases treatment on this. In baby patients, monitoring and family guidance come first; in adults, whether the blockage is lasting and how it affects daily life are the deciding factors. The complaint's duration and any history of recurrent inflammation are weighed together to find the best approach.

To clarify the cause of your constant watering, book an examination appointment with Op. Dr. Anıl Kaya.