What is a tear sac blockage?

Dacryocyst blockage is mainly caused by congenital malformation, trauma, inflammation and infection.

1. After congenital malformation

patients are born, the film at the lower end of the nasolacrimal duct cannot disappear normally, which may lead to abnormal structure of the lacrimal sac, resulting in blockage of the nasolacrimal duct.

2. Traumatic

external force directly or indirectly acting on the orbital site may cause local soft tissue and blood vessel damage, resulting in tissue fluid and blood retention, resulting in lacrimal sac blockage.

3. Inflammatory infection

Pathogenic microorganism infection can cause inflammatory reaction. Continued inflammation stimulation will cause congestion and edema of the nasolacrimal duct of patients. When exudates adhere to each other, it can lead to lacrimal sac blockage.