Nasolacrimal Duct

The nasolacrimal duct (ductus nasolacrimalis) is a canal that connects the nose and eye. It is about 15 mm long and passes through the nasal cavity and frontal bone to connect to the eyeball. The nasolacrimal duct plays an important role in clearing the eye of secretions and mucus that can cause infections and inflammation of the eye.

The nasolacrimal duct cannot be closed or blocked, so any disruption of its patency can lead to the development of infection or inflammation of the eye. In case of obstruction of the nasolacrimal duct, surgical intervention is required to restore its function.

To prevent violations of the patency of the nasolacrimal ducts, it is necessary to monitor the hygiene of the nose and eyes, as well as undergo regular examinations by a doctor. If you notice any changes in your nasolacrimal duct, such as nasal or eye discharge, see your doctor for diagnosis and treatment.

The nasolacrimal duct is a canal that connects the nasal cavity to the lacrimal sac. It is located on the lateral wall of the nasal cavity and starts from the nasal septum at the level of the lower edge of the middle turbinate.

The nasolacrimal duct is about 30 mm long and about 1 mm in diameter. It passes through the nasal cavity and ends in the lacrimal sac, which is located on the lower wall of the orbit.

The main function of the nasolacrimal duct is to drain tears from the nasal cavity into the lacrimal sac. When we cry or laugh, tears flow through the nasolacrimal duct into the lacrimal sac, where they are collected and then released through the lacrimal ducts into the oral cavity.

If the nasolacrimal duct is blocked or clogged, tears cannot pass through it and accumulate in the nasal cavity, which can lead to inflammation and infection. This condition is called dacryocystitis and can be caused by various reasons such as allergic rhinitis, sinusitis, nasal infections, etc.

Various methods are used to diagnose dacryocystitis, such as computed tomography, magnetic resonance imaging and endoscopic examination of the nasal cavity. Treatment for dacryocystitis may include lavage of the nasolacrimal duct, surgery, or the use of medications.

In conclusion, the nasolacrimal duct is an important channel that drains tears from the nasal cavity and prevents the development of infections. However, if it is blocked or clogged, it can lead to serious complications such as dacryocystitis. Therefore, it is important to monitor the health of the nasolacrimal duct and promptly consult a doctor if problems arise.