Definition of Tear sac
1. Noun. 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.
Group relationships: Lacrimal Apparatus
Generic synonyms: Cyst, Vesicle
Medical Definition of Tear sac
1. The upper portion of the nasolacrimal duct into which empty the two lacrimal canaliculi; empty. Synonym: saccus lacrimalis, dacryocyst, sacculus lacrimalis, tear sac. (05 Mar 2000)
Tear Sac Pictures
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Lexicographical Neighbors of Tear Sac
Literary usage of Tear sac
Below you will find example usage of this term as found in modern and/or classical literature:
1. Text-book of Ophthalmology by Ernst Fuchs (1908)
"Then, beginning at the nasal side of the tear sac and using a blunt instrument, ... Many prefer to make the operation with the tear sac laid open, ..."
2. Atlas and Epitome of Operative Ophthalmology by Otto Haab (1905)
"By slowly withdrawing the hollow sound the entire canal and tear sac may be ... Extirpation of the tear sac in cases of impermeable stricture that lead to ..."
3. Text-book of Ophthalmology by Ernst Fuchs (1911)
"Then, beginning at the temporal side of the tear sac and using a blunt ... Moreover, removal of the tear sac is very frequently done in cases in which ..."
4. Clinical Journal (1900)
"But, with the above rare exceptions, the seat of obstruction is in— (c) The tear sac and nasal duct. Obstruction in the nasal duct is the prime cause, ..."
5. Saint Louis Medical and Surgical Journal (1887)
"If the lower punctum and canaliculus are in proper position and condition, I seek for obstruction in the nasal duct below the tear sac, where it is usually ..."
6. A Manual on Diseases of the Eye and Ear by William F. Mittendorf (1881)
"... of the tear-sac, Lachrymal catarrh. < Inflammatory conditions of the lining membrane of the nose are perhaps the most frequent of all the causes of ..."