The practice of surgery : embracing minor surgery and the application of dressings, etc., etc., etc. . n of the nasal duct: they are usually mentioned as ope-rations for fistula lacrymalis, although in the majority of instances,there is no fistulous opening. Before performing any operation, we should ascertain positivelythat there is a permanent obstruction which cannot be removed byother means. If inflammation of the sac be treated on properprinciples, the cases requiring operations will be very few. We foreign ho dies in the eye. 469 should avoid the operation as long as we can, because it i
The practice of surgery : embracing minor surgery and the application of dressings, etc., etc., etc. . n of the nasal duct: they are usually mentioned as ope-rations for fistula lacrymalis, although in the majority of instances,there is no fistulous opening. Before performing any operation, we should ascertain positivelythat there is a permanent obstruction which cannot be removed byother means. If inflammation of the sac be treated on properprinciples, the cases requiring operations will be very few. We foreign ho dies in the eye. 469 should avoid the operation as long as we can, because it is but atemporary and imperfect remedy: if the obstruction be merelycleared away it will probably soon recur. To avoid this the patientmust submit to the inconvenience of wearing a foreign body in theduct to maintain it in a pervious state. The operation for obstruction of the nasal duct consists in pass-ing a narrow bistoury into the duct, introducing its point just belowthe tendon of the orbicularis palpebrarum, and by pressing down-wards, backwards, and inwards, it enters the duct; the remaining. obstruction of the duct must be cleared by adequate pressure with aprobe: a catgut or silver style is introduced about the thickness of anordinary probe, an inch and a quarter in length, with an expandedhead to prevent it sinking into the wound, or long enough to reachfrom the corner of the eye, to the termination of the nasal duct: apiece of bougie is sometimes placed in the duct for a week or tendays, injecting the passage frequently with tepid water. The patientsoon learns to remove and replace the style, which becomes quiteloose: he should be directed to take it out and clean it from timeto time. As the presence of the instrument causes neither painnor inconvenience, it should be worn permanently, since thismethod maintains the natural course of the tears with the leasttrouble to the patient. Foreign Bodies in the Eye.—Foreign bodies of various kindsoften get under the eyelids,
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