Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 edition. Excerpt: ... CHAPTER III OPHTHALMIC THERAPEUTICS LOCAL TREATMENT. CHEMICAL REMEDIES. ANTISEPTICS. ASTRINGENTS. IRRITANTS. ALKALOIDS J MYDRIATICS AND MEIOTICS. ANAESTHETICS. APPLICATION OF EYE DROPS, POWDERS, AND OINTMENTS. MECHANICAL REMEDIES. PRESSURE BANDAGE. MASSAGE. IRRIGATION. THERMIC REMEDIES. HOT AND COLD APPLICATIONS. POULTICES AND COMPRESSES. PREPARATION OF PADS, APPLICATORS, ETC. Chemical agents act locally and are themselves decomposed by the chemical reaction with the tissues and nutrient fluids, causing a precipitation or coagulation of albumen in normal as well as morbid secretions, and a certain degree of neutralization of the therapeutic agents. Their action is therefore self-limited to a certain extent, and the changed tissues do not react indefinitely. The action of chemical agents is not lasting, for the fresh blood supply and renewed secretion restore, at least in part, the former conditions. This can be accelerated by removing the surplus of the chemical agent, mechanically, as by mopping or irrigation, or chemically, by instilling solutions which neutralize or antagonize the active principles of the former. Antiseptics are remedies which arrest septic decomposition. They do this by preventing the development of or completely destroying the bacilli on whose action the septic process depends. Agents of this class are used for a variety of purposes, such as the cleansing of instruments, the preparation of eye dressings, ' and as cleansing fluids for the field of operation. Those most frequently used in the treatment of eye disease itself for irrigation or instillation are the following: --Boracic acid, or boric acid, is a slightly antiseptic, somewhat astringent, unirritating white powder. A saturated solution contains one part in.
