Ophthalmic and otic memoranda / By D.B.St. John Roosa ... and Edward T. Ely.

  • Ely, Edward T. (Edward Talbot), 1850-1885
Date:
[1885]
Catalogue details

Licence: Public Domain Mark

Credit: Ophthalmic and otic memoranda / By D.B.St. John Roosa ... and Edward T. Ely. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    which should grasp fold of conjunctiva near corneal margin, and be lightly held, so as to s'.eady globe without any undue traction or pressure. Most of the incisions are made through cornea, and knife should always be entered perpendicularly, so as to divide tissue by shortest route and not run between its laminae. When point of instrument has en- tered ant. chamber, it should be turned for- ward, and carefully watched lest it wound iris or lens. Incisions in ciliary region are to be avoided, on account of risk of sympathetic ophthalmia. Blood-clots, etc. best removed from incision on front of eye, by gently rub- bing lifjs over it; or by fine forceps. Paracentesis of cornea: performed by passing needle, or blade of iridectomy- knife, through cornea near margin, and allowing aqueous humor to drain off slowly alongside of instrument. In this, and all other operations where anterior chamber is opened, a too rapid escape of fluid must be avoided, through fear of prolapse of iris, and of inju- rious shock which results from too sudden diminution of intra-ocular tension. SaemiscKs operation for indolent ulcer \Sacmisch, Bonn, igth cent.], consists in pass- ing point of a narrow-bladed cataract knife through healthy cornea, I mm. from one edge of ulcer, and bringing it out same distance from opposite edge ; knife is then made to cut its way out through bottom of ulcer