Imperforate lacrimal punctum

Imperforate Lacrimal Punctum is a congenital condition characterized by the absence of an opening in one or both lacrimal puncta. The lacrimal puncta are small openings located at the inner corner of the upper and lower eyelids, responsible for draining tears from the eye into the nasolacrimal duct and eventually into the nasal cavity. This condition can lead to tear drainage problems, resulting in excessive tearing (epiphora) and recurrent eye infections.

Causes

Imperforate lacrimal punctum is a congenital anomaly, meaning it is present at birth. The exact cause of this condition is not well understood, but it is thought to occur due to a failure in the normal development of the nasolacrimal system during embryogenesis. Genetic factors may play a role, although specific genes have not been identified.

Symptoms

The primary symptom of an imperforate lacrimal punctum is excessive tearing, or epiphora, due to the inability of tears to drain properly from the eye. This can lead to discomfort, blurred vision, and recurrent eye infections due to the constant moisture.

Diagnosis

Diagnosis of an imperforate lacrimal punctum is primarily based on a physical examination of the eye. A healthcare provider may use a dye disappearance test to assess tear drainage. In some cases, imaging studies such as dacryocystography may be used to evaluate the structure of the lacrimal drainage system.

Treatment

Treatment for an imperforate lacrimal punctum typically involves surgical creation of a new opening, a procedure known as punctoplasty. This allows tears to drain normally, relieving symptoms of epiphora and reducing the risk of infection. In some cases, additional procedures may be necessary to address any associated abnormalities in the nasolacrimal duct.

Prognosis

With appropriate treatment, the prognosis for individuals with an imperforate lacrimal punctum is generally good. Surgical intervention can effectively restore tear drainage, alleviating symptoms and preventing recurrent infections.

See Also

• Lacrimal apparatus
• Epiphora
• Conjunctivitis
• Nasolacrimal duct obstruction

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Source: Data courtesy of the U.S. National Library of Medicine. Since the data might have changed, please query MeSH on Imperforate lacrimal punctum for any updates.

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