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What Is Lacrimal Duct Obstruction?

Lacrimal duct obstruction occurs when the normal drainage pathway for tears from the eye into the nose becomes blocked. Tears then pool on the eye surface and spill over the eyelids, even when the eye is not especially irritated. Infections of the lacrimal sac, called dacryocystitis, can develop when fluid stagnates. The condition can be present at birth or appear later in life from inflammation, trauma, or age related narrowing. Symptoms include tearing, discharge, and recurrent redness at the inner corner of the eye.

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What Is Lacrimal Duct Obstruction?

Lacrimal duct obstruction occurs when the normal drainage pathway for tears from the eye into the nose becomes blocked. Tears then pool on the eye surface and spill over the eyelids, even when the eye is not especially irritated. Infections of the lacrimal sac, called dacryocystitis, can develop when fluid stagnates. The condition can be present at birth or appear later in life from inflammation, trauma, or age related narrowing. Symptoms include tearing, discharge, and recurrent redness at the inner corner of the eye.

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Causes and Types of Lacrimal Duct Obstruction

In infants, congenital nasolacrimal duct obstruction usually results from a persistent membrane at the valve of Hasner. Most cases improve naturally during the first year. In adults, chronic inflammation, sinus disease, trauma, or prior nasal surgery can narrow or close the duct. Age related changes and idiopathic fibrosis are common in older patients, especially women. Tumors or stones in the duct or sac are less common but important to recognize.

Symptoms and Clinical Features

Constant tearing, called epiphora, is the hallmark symptom. Patients may notice tears running down the cheek, crusting on the lashes, and blurred vision from excess fluid on the surface. Recurrent infections cause pain, swelling, and tenderness over the lacrimal sac at the inner canthus, sometimes with pus discharge. On examination, pressure over the sac can reflux mucus or pus through the punctum. The rest of the eye is often healthy apart from secondary irritation from chronic wetness.

How Is Lacrimal Duct Obstruction Diagnosed?

Diagnosis begins with history and external examination of the lids and lacrimal system. The eye doctor checks punctum position, lid tone, and any swelling near the sac. Tests such as the fluorescein dye disappearance test, lacrimal irrigation, and probing help confirm whether the duct is blocked and at which level. Imaging with dacryocystography or CT is reserved for complex cases, trauma, or suspected tumors. Distinguishing true obstruction from reflex tearing due to dry eye is important.

How Is Lacrimal Duct Obstruction Managed?

Treatment depends on age and severity. Many infants are managed with lid hygiene, lacrimal sac massage, and observation, with probing considered if tearing persists beyond the first year. Adults with symptomatic obstruction are often helped by a dacryocystorhinostomy, a procedure that creates a new tear drainage route into the nose. Acute dacryocystitis is treated with systemic antibiotics and sometimes incision and drainage. Addressing nasal disease and lid malposition improves outcomes and comfort.

FAQs About Lacrimal Duct Obstruction

Will my baby outgrow a blocked tear duct?

Many infants with congenital nasolacrimal duct obstruction improve during the first year as the membrane at the duct exit opens. Regular massage and cleaning can help while you watch for signs of infection. Persistent tearing after that age is usually evaluated for probing.

Is surgery always needed for adult lacrimal duct obstruction?

Not in every case, but persistent tearing that affects daily life often responds best to dacryocystorhinostomy. Your surgeon will discuss risks, benefits, and alternatives based on exam findings and imaging.

What are signs of an infected tear sac?

Pain, redness, and swelling at the inner corner of the eyelid with tenderness and possible pus discharge suggest dacryocystitis. Fever can occur in more severe cases. This picture calls for prompt medical attention.

Can dry eye cause watery eyes even if my ducts are open?

Yes, surface dryness can trigger reflex tearing that overwhelms drainage, so eyes look watery even with a patent duct. Tests at the clinic help separate dry eye with reflex tearing from true obstruction.