Manual of ophthalmology . ichlorid of mercury,1-5,000, or permanga- x e , Fig. 5.—Introduction of a lachrymal probe. nate of potassium, 1-5,000, and sulphate of zinc, one-half of 1 per cent. Pathologic conditions in the nose must be carefully corrected. A more satisfactory way of treating chronic dacryocystitis consistsin extirpation of the lachrymal sac, which is indicated if conservativemeasures, or the procedures just described, have failed to cure thecondition, if the patient can not devote sufficient time to treatment,if there is an impassable stricture, if operation on the eye is indicat
Manual of ophthalmology . ichlorid of mercury,1-5,000, or permanga- x e , Fig. 5.—Introduction of a lachrymal probe. nate of potassium, 1-5,000, and sulphate of zinc, one-half of 1 per cent. Pathologic conditions in the nose must be carefully corrected. A more satisfactory way of treating chronic dacryocystitis consistsin extirpation of the lachrymal sac, which is indicated if conservativemeasures, or the procedures just described, have failed to cure thecondition, if the patient can not devote sufficient time to treatment,if there is an impassable stricture, if operation on the eye is indicated,and for the relief of infected ulcers of the cornea which may be anassociated condition. The fluid in a chronically inflamed lachrymal sac is highly chargedwith pathogenic microorganisms. The streptococcus pyogenes andpneumococcus, as well as other organisms, are always present in viru-lent strains, and if the cornea should be abraded in these circum-stances, such an abrasion may rapidly be converted into a sloughing. 38 MANUAL OF OPHTHALMOLOGY. ulcer. Under such conditions also operations on the eyeball, for ex-ample, a cataract extraction, or an iridectomy, would be absolutelycontraindicated until the lachrymal disease had been cured. Dacryoadenitis.—Although inflammation of the lachrymal gland isnot a common affection, it occurs with sufficient frequency to deservemention, and may appear in an acute or in a chronic form. Rarelythere is suppuration. It may be caused by acute infectious diseases,notably influenza, and sometimes becomes enlarged during attacks ofmumps. One variety of this affection is tuberculous in nature, andenlargement, both of the lachrymal sac and of the palpebral portion ofthe gland is occasionally observed in association with diseases of theconjunctiva and cornea. The chronically inflamed gland can usuallybe felt by palpating with the finger beneath the outer border of theorbit. In acute cases hot applications are of service, and should sup-purati
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