Nasolacrimal duct obstruction

Nasolacrimal Duct Obstruction is a medical condition that occurs when the nasolacrimal duct, a structure responsible for draining tears from the eyes to the nose, becomes blocked. This condition is common in infants but can also occur in adults due to infection, inflammation, or trauma.

Causes

The most common cause of nasolacrimal duct obstruction in infants is the failure of the membrane at the end of the nasolacrimal duct, known as the Hasner's valve, to open fully at birth. In adults, the obstruction can be caused by a variety of factors including infection, inflammation, trauma, or tumors.

Symptoms

The primary symptom of nasolacrimal duct obstruction is excessive tearing, known as epiphora. Other symptoms may include mucus or pus discharge from the eyes, redness, and swelling in the inner corner of the eyes.

Diagnosis

Diagnosis of nasolacrimal duct obstruction is typically made through a physical examination and a detailed medical history. Additional tests such as dacryocystography, a type of X-ray imaging, may be used to confirm the diagnosis and determine the exact location of the obstruction.

Treatment

Treatment for nasolacrimal duct obstruction depends on the cause and severity of the condition. In infants, the condition often resolves on its own within the first year of life. In adults, treatment options may include antibiotics for infection, steroids for inflammation, or surgery for severe cases.

See Also

• Dacryocystitis
• Dacryocystorhinostomy
• Epiphora

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Nasolacrimal_duct_obstruction

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  Tear system diagram
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  Nasolacrimal duct obstruction procedure