A dictionary of practical surgery: containing a complete exhibition of the present state of the principles and practice of surgery, collected from the best and most original sources of information, and illustrated by critical remarks (Volume 2).

  • Samuel Cooper
Date:
1810
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Licence: Public Domain Mark

Credit: A dictionary of practical surgery: containing a complete exhibition of the present state of the principles and practice of surgery, collected from the best and most original sources of information, and illustrated by critical remarks (Volume 2). Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    ter, and quite destitute of sensibility. Its detachment from the rest of the eye, is u matter of trivial importance; while, on the contrary, its presence oc- casions all the inconveniences of an ex- traneous substance, that would prevent a wound from uniting-, and an ulcer from healing. Hence, the detachment of the protruded vesicle is very justly indicated, and the success of the plan is confirmed by practice; doubtless, be- cause the little transparent tumour can, in general, be expeditiously removed, b) a siroke of the curved convex-edged scissors. But if, in some particular cases, the mid not project sufficiently from the wound, or ulcer of the cornea, to be included in the scis- sors, the same object may be accom- plished by puncturing the tumour with a lancet, orcouching-needle; for, when the limpid fluid which it contains is discharged, the membrane forming it .shrinks within the edges of the wound, or ulcer, of the cornea, and no longer hinders the union of the former, or the cicatrization of the latter. Should the transparent tumour reap- pear in the same situation, the day after its recision, or puncture, it is right to repeat one of these operations, and to adopt further measures for maint^ the wound of the cornea in contact; or, if it should be an ulcer, the eschar must be made to adhere more deeply to its bottom and sides, so as to form a greal - er obstacle than before to the escape of the vitreous humour. In such circum- stances, tlie surgeon must take al siblc care to obviate such causes as have a tendency to propel the vitreous humour towards the wound, or ulcer, of the cornea; particularly too much pressure of the eyelids, spasms of the muscles of I ughing, sneezing, efforts at stool, and other similar ones; and i ilso be taken to cheek the progre is of inflammation. Pellier's two cases (Obs. sur CQ'.il, p. }50.) on the treatment of this species of trans] ular prolapsus di perusal To these, it' it were requisite, Scarpa says he could add sever:. I .similar ones, which have fallen under his own observation, in cases of ulcer of . penetrating the anterior chamber of the aqueous humour, and which \v>re attended with as much those related by the French choroid coat is, likewise, not cx- . usu'- Scarpa has seen and cured this complaint in M. Bressa- nini, an apothecary at Bescape. A small abscess torn rotic and choroid coats, at the distance of two lines from the union of the cornea with the sclerotica, in the inferior he- misphere of the globe of the eye, in con- sequence of a severe internal and ex- ternal ophthalmy, which had been treated, in its incipient state, with re- pellent remedies. The abscess burst, and discharged a small quantity of thick. viscid lymph; then a small blackish bo- dy, composed of the choroid coat, pre- sented itself on the outside of the little ulcer of the sclerotica. The treatment consisted in applying the argentum ni- tratum several times to the projecting portion of the choroides, until it was con- sumed, and reduced to a level with the bottom of the ulcer of the cornea. Then the place healed. The eye remained. irer, considerably weakened, and the pupil became afterwards, so much contracted, that it was almost entirely closed. {Scarpa sulle Principal! Alalia- tie degli Occlu. Ventzia. Itf02.) Consult also, Richters Anfangsgrunde der Wundarzneykunst. Band. 3. Von dem VorfaUe der Pegenbogcnhaut. For a description of the manner of dividing the iris, in order to make an artificial pupil, when the natural o i, refer to Pupil, Closure of. A wound of the iris is one of the things most to be feared in extracting a cataract. No sooner does any instru- ment penetrate the eye, than the mus- cles of this organ usually contract in a spasmodic manner, so as to make great pressure on the part, and to urg ward the cataract and the iris. In this circumstance, we cannot wonder that the hitter should now and then be in- jured by the edge of the instrument. When the iris becomes entangled un- der the knife, Wenzel asserts, that it may be invariably disengaged without injury, by gently touching the cornea with the finger. Richter justly observes. der Wundarzm.) bis artifice is not unattended with some risk of pressing- out the aqueous ir; especially, if the irritation of touching the eye should make it move, or the operator in the least disturb the knife. See Cataract. ISCHU'llIA, (from <o-^«, to restrain; and wfov, the urine.) A suppression, or stoppage of the urine. The distinction between a suppres- : of urine, is practical