Lacrimal Duct Obstruction
Interference with the secretion of tears by the lacrimal glands. Obstruction of the lacrimal sac or nasolacrimal duct causing acute or chronic inflammation of the lacrimal sac (dacryocystitis). It is caused also in infants by failure of the nasolacrimal duct to open into the inferior meatus and occurs about the third week of life. In adults occlusion may occur spontaneously or after injury or nasal disease. (Newell, ophthalmology: Principles and Concepts, 7th ed, p250)
Diagnosis and therapies
Nasolacrimal duct, Nasolacrimal duct cyst, Congenital lacrimal duct obstruction, Nasolacrimal canal, Lacrimal sac, Fossa for lacrimal sac, Lacrimal groove, Imperforate lacrimal punctum, Lacrimal canaliculi, Dacryocystorhinostomy
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