Obstruction of the lacrimal canaliculi and nasolacrimal canal. Treatment
Obstruction of the lacrimal canaliculi - can be congenital, or also occur due to injury, infection and inflammation of the lacrimal canaliculi, or radiation.
In case of partial obstruction, intubation of the lacrimal canaliculi is performed; in case of complete obstruction, a surgical operation (canaliculodacryocystorhinostomy) is performed with the imposition of anastomoses (communications) between the canaliculus and the lacrimal sac.
The causes of obstruction of the nasolacrimal duct may be nasoorbital trauma, surgical interventions on the nose and sinuses, and germination of nasopharyngeal tumors.
Surgical treatment – dacryocystorhinostomy.
About the disease
The lacrimal ducts begin with the excretory ducts of the lacrimal gland and the glands of the conjunctiva. The tear fluid secreted by the lacrimal glands washes the anterior part of the eyeball, then flows along the lacrimal stream located along the inner edge of the eyelids to the inner corner of the eye, where the lacrimal puncta are located on the inner parts of the edges of the eyelids. Further, through the upper and lower lacrimal canaliculi, it penetrates the lacrimal sac and ends its path in the nasal cavity, where the nasolacrimal duct opens under the inferior nasal concha.
Impaired patency of the lacrimal ducts leads to impaired tear drainage and the occurrence of lacrimation, which can increase under the influence of cold and windy weather and decrease in a warm, dry room.
The causes of impaired lacrimal drainage may be: