. A Reference handbook of the medical sciences embracing the entire range of scientific and practical medicine and allied science . projectthrough the punctum. In order to remove these growthscompletely, division of the canaliculus may be necessary. Diicryocystitis.—The lachrymal sac, into which thecanaliculi empty, and which is continuous below withthe nasal duct, is frrciucntly the seat of uncomplicated, primary inflammation of the lachry-mal sac is, however, not often encountered. In a verylarge majoritj- of cases the inflammation is secondary to,and dependent u])ou, disease
. A Reference handbook of the medical sciences embracing the entire range of scientific and practical medicine and allied science . projectthrough the punctum. In order to remove these growthscompletely, division of the canaliculus may be necessary. Diicryocystitis.—The lachrymal sac, into which thecanaliculi empty, and which is continuous below withthe nasal duct, is frrciucntly the seat of uncomplicated, primary inflammation of the lachry-mal sac is, however, not often encountered. In a verylarge majoritj- of cases the inflammation is secondary to,and dependent u])ou, disease of the nasal duct. Primaryinflammaliou of the sac is oftenest met with in the new-born, usually in the form of a mild blennorrhaa; it alsooccurs in strumous children, and it may be produced byexternal violence—for exam]ile, a blow upon the eye—. Fig. 3098.—Case of Acute Dacryocystitis. or by the entrance into the sac of an irritant fluid. Theusual cause of dacryoc}stilis, however, is stricture of thenasal duct. When this condition exists tears, mucus, andepithelial debris accumulate in the lachrymal sac andform an excellent medium for the growth of invading ;3!H) REFERENCE HANDBOOK OF THE MEDICAL SCIENCES. Liaclir> iiialApparatus. bacteria. In this way there is set up a chronic catarrhaliutianimation, or blenuorrlioea, wliicli last for 3ears,the sac being constantly distended with mucopurulentmatter, which oozes out through the puncta and spreadsover the eye, obsciuing vision, or mixes witlt the tears,to overrim the lid. and so increases tlie annoyance of thestillicidium. The individual who suffers in this way is fortunate,however, if he does not experience a periodical aggrava-tion of his troubles; for in chronic blenuorrhiea of thelachrymal sac acute exacerbations of the intlammationare by no means unusual, while
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