The student's guide to diseases of the eye . n the anterior chamber, itmust be tilted slightly forwards toavoid wounding the iris and lens ;and care must be taken not to tiltit sideways, for if this be done thewound, instead of lying parallelwith the border of the cornea, willlie more or less across that incision is made almost asmuch by lifting the eye against theknife with the fixation forceps, asby pushing the knife against theeye. The forceps are now laiddown, or if fixation be still neces-sary, they are given to an assistant,who is to gently draw the eye intothe position required
The student's guide to diseases of the eye . n the anterior chamber, itmust be tilted slightly forwards toavoid wounding the iris and lens ;and care must be taken not to tiltit sideways, for if this be done thewound, instead of lying parallelwith the border of the cornea, willlie more or less across that incision is made almost asmuch by lifting the eye against theknife with the fixation forceps, asby pushing the knife against theeye. The forceps are now laiddown, or if fixation be still neces-sary, they are given to an assistant,who is to gently draw the eye intothe position required for the nextstep; in so doing, he is to draw away from the eye,not to push the ends of the forceps against the scle-rotic. (2.) The iris forceps are introduced, closed, Fig. 136. — Irtomy scissors. 346 OPERATIONS into the wound, and passed very nearly to the pupil-lary border of the iris, before being opened and madeto grasp it. By seizing the pupillary part of the iris,its inner circle is certain to be brought outside the a> I 3 0 CO. wound, when the forceps are now withdrawn ; if theiris be seized in the middle of its breadth, a button-hole may be cut out, and the pupillary part left OPERATIONS ON THE IRIS 347 standing. Often the iris is carried into the woundby the gush of aqueous as the keratome is with-drawn, and it is then seized without passing theforceps so far into the chamber. (3.) The loop ofiris having been cut off, either at a single snip, orby cutting first one end and then the other, as inglaucoma (p. 343), the tip of the curette is gentlyintroduced into each angle of the wound to free theiris, should it be entangled; this little precaution isof importance in order to prevent inclusion of theiris in the track of the wound. The speculum is nowremoved, and the eye, or both eyes, bandaged over apad of cotton wool, either with a four-tailed bandageof knitted cotton, or two or three turns of a softcotton or flannel roller. The anterior chamber is refilled in twe
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Keywords: ., bookcentury1800, booksu, booksubjecteye, booksubjectophthalmology
