The essentials of materia medica and therapeutics / by Alfred Baring Garrod.

  • Garrod, Alfred Baring, 1819-1907.
Date:
1877
Catalogue details

Licence: Public Domain Mark

Credit: The essentials of materia medica and therapeutics / by Alfred Baring Garrod. Source: Wellcome Collection.

    495/560 (page 459)
    459 Pupil Dilators (Mydriatics) Belladonua. Atropine. Stramonium Henbane. cord ; the indirect are those which lower the tone of the general system. The members of the latter group are never administered except for purposes independent of their anaphrodisiac property. Therapeutic applications. The uses of these remedies, and the indications for their employment, are sufficiently shown by their names. subclass 6.—Medicines which act upon the eyes. Order i.—Pupil Dilators. Order 2.—Pupil Contractors. Substances which either dilate or contract the pupil. Pupil Contractors (Myositics). Calabar bean. Opium. Salts of morphia. Some other alkaloids in opium. Resin of opium. Ejects of the above Substances. The substances in the above 1 st which dilate the pupil, also paralyze the adjusting power of the eye. They act in the same manner whether applied on or mnil al6 676 T ’ °r taten interna]]y- TJl0se which contract the pUI also produce myopia, or short-sightedness, by causing spasm of the ciliary muscle. Calabar bean acts both when applied locally and alter absorption from the stomach. Opium outhe its1lb7' r18 n° mflT‘Ce whenaPPlied to the eye, blit only after ts absorption mto the general system; its action is probably upon the third nerve, through the nervous centres 1 7 J^peutic applications. These substances are used by the ophthalmic surgeon. Atropine to dilate the pupil for purposes of examination, and to prevent adhesion of the iris in cases of iritis Calabar bean is used to counteract the effects of atropine in the *on of *h“ *-* - ocjr^t DIVISION II. Order 1.—Irritants. Group 1. Rubefacients.