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What Is Lacrimal Duct Stenosis?

Lacrimal duct stenosis is a narrowing of part of the tear drainage pathway that reduces tear outflow. It may involve the punctum, canaliculi, or the nasolacrimal duct and often leads to epiphora, which means excessive tearing. Stenosis can be congenital or acquired from inflammation, infection, trauma, medications, or age-related changes. Treatment ranges from managing inflammation to procedures that reopen or bypass the narrowed segment.

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What Is Lacrimal Duct Stenosis?

Lacrimal duct stenosis is a narrowing of part of the tear drainage pathway that reduces tear outflow. It may involve the punctum, canaliculi, or the nasolacrimal duct and often leads to epiphora, which means excessive tearing. Stenosis can be congenital or acquired from inflammation, infection, trauma, medications, or age-related changes. Treatment ranges from managing inflammation to procedures that reopen or bypass the narrowed segment.

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What Gets Narrowed and Why It Matters

The lacrimal drainage pathway is a series of small channels, so even mild narrowing can slow tear flow. Narrowing can cause tears and mucus to stagnate, which raises the chance of irritation and infection. If the lacrimal sac becomes infected, symptoms can worsen quickly. Identifying the exact level of stenosis helps guide the most appropriate treatment.

Symptoms and Possible Causes

Symptoms commonly include tearing, blurred vision from tear film instability, and sticky discharge.

  • Congenital narrowing in infants due to incomplete opening of the distal duct
  • Chronic inflammation from allergy, blepharitis, or sinus disease
  • Scarring after infection, injury, or surgery
  • Medication related stenosis in some patients, including certain chemotherapy agents

How It Is Diagnosed

Evaluation starts with an eye exam to look for eyelid malposition and ocular surface causes of tearing. Doctors may use dye disappearance testing and irrigation to confirm reduced drainage and localize the narrowing. Probing can help assess canalicular patency, and imaging may be used when complex obstruction or a mass is suspected. Diagnosis is based on both symptoms and objective drainage testing.

Treatment Options

Treatment depends on the site and severity of stenosis and whether infection is present.

  1. Medical care such as treating eyelid inflammation and using antibiotics when infection is present.
  2. Procedures such as punctal dilation, punctoplasty, silicone intubation, or balloon dacryoplasty in selected cases.
  3. Dacryocystorhinostomy, which creates a new drainage route when nasolacrimal duct obstruction persists.

Stents are usually temporary and help keep the pathway open while the tissue heals. When obstruction is severe or recurrent, dacryocystorhinostomy can provide a more durable bypass. Your eye doctor may also treat eyelid inflammation and dry eye because they can worsen symptoms and affect outcomes.

FAQs on Lacrimal Duct Stenosis

Can lacrimal duct stenosis go away on its own?

Some congenital cases in infants improve as the system opens, but many acquired stenoses do not resolve without addressing the cause. Your eye doctor will recommend observation or treatment based on age, symptoms, and exam findings.

Is lacrimal duct stenosis the same as a blocked tear duct?

Stenosis means narrowing, while obstruction means complete blockage, but both can cause similar symptoms. Narrowing can progress to obstruction, and both are evaluated with similar drainage tests.

What is dacryocystorhinostomy?

Dacryocystorhinostomy is a surgery that bypasses a blocked or severely narrowed nasolacrimal duct by creating a new connection between the lacrimal sac and the nasal cavity. It aims to relieve tearing and reduce mucus retention in the sac.

When is stenting or intubation used?

Silicone intubation may be used when narrowing involves the canaliculi or when the goal is to keep the pathway open while healing occurs. It is often combined with dilation or punctoplasty depending on the stenosis location.

References

Nasolacrimal Duct Obstruction. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK532873/. Date Accessed February 5, 2026.

Nasolacrimal Duct Obstruction and Epiphora. Medscape. https://emedicine.medscape.com/article/1210141-overview. Date Accessed February 5, 2026.

Blocked tear duct (nasolacrimal duct obstruction): Symptoms and causes. Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/blocked-tear-duct/symptoms-causes/syc-20372167. Date Accessed February 5, 2026.

Blocked tear duct (nasolacrimal duct obstruction): Diagnosis and treatment. Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/blocked-tear-duct/diagnosis-treatment/drc-20372171. Date Accessed February 5, 2026.

Primary acquired nasolacrimal duct obstruction: epidemiology, clinical signs and surgical treatment. Folia Medica. https://doi.org/10.3897/folmed.66.e128419. Date Accessed February 5, 2026.