File:Atlas and epitome of operative ophthalmology (1905) (14596111307).jpg

Identifier: atlasepitomeofop00haab (find matches)
Title: Atlas and epitome of operative ophthalmology
Year: 1905 (1900s)
Authors: Haab, O. (Otto), b. 1850 De Schweinitz, G. E. (George Edmund), 1858-1938
Subjects: Ophthalmologic Surgical Procedures
Publisher: Philadelphia, New York (etc.) : W.B. Saunders and company
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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e latter is easier to handle and, perhaps, would be betterfor a beginner to use instead of the keratome, which isoften very difficult to manage when the anterior chamberis narrow, and always places the lens in some danger. After the conjunctival sac has been lightly flushed out,or, if the irritation is severe, without that preliminaryprecaution, the stop-speculum is inserted, the globe firmlyheld below with the fixation-forceps, and the keratomeintroduced from above into the anterior chamber, either asshown in Plate 6—that is, the operator stands at thepatients head and pushes the keratome away from hisbody—or he stands by the side of the patient and, afterintroducing the keratome, pushes it toward his body.The keratome is introduced 2 mm. from the transparentedge of the cornea and advanced in such a way as tomake the incision parallel with the corneal border. Inold persons with deep-set eyes it is often necessary, inorder t sref at the eve, to draw the flaccid skin of the
Text Appearing After Image:
X IRIDECTOMY FOR RELIEF OF INCREASED TENSION. 189 upper lid upward with the fourth finger (see Plate 6).The keratome should be introduced as far as possible,without, however, injuring Descemets membrane with thepoint. It is also necessary in introducing it to avoidpricking the iris or even the lens. In the same way, whenthe instrument is withdrawn, the operator must be carefulnot to scratch the lens with the point. It is thereforebetter to depress the handle toward the patients brow,and to bring out the point along the posterior surface ofthe cornea, but without touching the membrane. If the anterior chamber is shallow and it is impossibleto advance the keratome far enough, the incision may beenlarged to one side as the instrument is withdrawn byturning the point in that direction and cutting as it iswithdrawn. It is always well to press the keratomeagainst the iris, in order to prevent prolapse of the latterfrom the wound. The excision of the iris, which now follows, requires agood a

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