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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    is tipped forward into the track of the wound, generally by pressure with the curette at the opposite corneal margin ; then, by gently sliding the curette over the cornea, the lens is forced out. The incision is made either upward or downward. Liebreictis operation {Lit'breich, London, lgt/i cent.]. Incision is made with narrow-bladed knife, is more transverse than in Graefe's operation, lying wholly in cornea, except puncture and coun- ter-puncture, which are made in sclerotic about i mm. from its edge. No iridectomy is performed. A cataract-extraction is some- times divided between two operations. At the first an iridectomy is performed ; then, at some subsequent fime, the lens is removed. This is called Jacobson's method [Jacobson, Konigsberg, 19th cent.]. In certain forms of cataract the lens is extracted in its capsule by passing a curette behind it. Operations for secondary cataracts (see p. 134) consist usually in making a small hole through the membrane by tearing it with needles (called a needling) or forceps, or by cutting it with a knife or a special form of scissors. The lens is sometimes removed in its cap- sule, by spooning it out (Pagenstecher) or by forcing it out, without an iridectomy, after having dislocated the lens with the back of the knife, while making the section (Roosa). During all operations involving corneal in- cision, iris may fall forward into wound, and