lacrimal sac

(redirected from Nasolacrimal sac)
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Related to Nasolacrimal sac: lacrimal duct
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Noun1.lacrimal sac - either of the two dilated ends of the lacrimal ducts at the nasal ends of the eyes that fill with tears secreted by the lacrimal glands
lacrimal apparatus - the structures that secrete and drain tears from the eye
vesicle, cyst - a small anatomically normal sac or bladderlike structure (especially one containing fluid)
References in periodicals archive ?
The presence of fluorescein on the cotton bud (positive result) indicates a functional obstruction where the tear fluid has collected in the nasolacrimal sac but has not drained normally, due to partial steno sis or where the nasolacrimal duct has collapsed/narrowed.
2,3) Our patient had been experiencing epiphora, which had been attributed to a blockage within the nasolacrimal sac.
Congenital dacryocystocele is characterized by a bluish-gray cystic swelling just below the medial canthus, which is caused by distention of the nasolacrimal sac.