An Improved method of extraction of cataractChurchill, 1868 - 71 pagina's |
Veelvoorkomende woorden en zinsdelen
ABERDEEN accident Annales d'Oculistique anterior chamber aqueous humour atrophied Bowman cachectic capsule cause chamber chemosis chloroform choroiditis ciliary processes circumference closed pupil coloboma iridis conjunctiva conjunctival flap contusion convex cornea corneal incision cortical cortical substance couching counter-puncture Critchett's cure of glaucoma curette cystotome Daviel's method depression Desmarres disease excision exophthalmic extraction of cataract extraction under chloroform eyelids favourable forceps globe goitre Graefe Graefe's operation improved instruments intraocular pressure introduced iridectomy and extraction irido-choroiditis iris iritis irritation knife lacerated large flap left eye left hand lens lessening the risk loss of vitreous Medical Mémoire de l'Académie Méry needle nucleus old operation opening operation of extraction ophthalmic ophthalmoscopic ordinary flap extraction pain panophthalmitis perform iridectomy period practice proposed recumbent position removed Saint-Yves scissors sclerotic junction seized sight soft cataract speculum spoon subsequent suppuration surgeon symptoms tension tion traction traumatic cataract vaso-motor vision vitreous humour Waldau's method whilst zonula
Populaire passages
Pagina 14 - ... it an opening made with another knife, so as to allow it to come through, after which the incision is to be finished exactly in the same way as if the sharp-pointed knife only had been employed.
Pagina 65 - I now advocate may be summed up as follows : — 1. It is the safest; all the different stages of the operation may be gone through with precision, safety, and almost certainty of success. 2. The chances of success being so high, we need not put off the operation until blindness of both eyes is complete, but may perform it as soon as one eye is blind and the other becoming so.
Pagina 55 - The points of the puncture and counter-puncture are so made that the corneal flap extends to a line more than one-third of its circumference. The knife is then pushed on in a plane parallel to the iris, until the corneal section is nearly completed, when its edge is inclined a little backwards, so as to carry it under the conjunctiva, and it is then withdrawn, leaving a conjunctival bridge in the centre. At this stage I take entire charge of the eye. My two fingers of the left hand serving the purpose...
Pagina 55 - ... in the dark ; and, finally, because when there is a glaucomatous tendency, or softening of the vitreous, the simultaneous performance of the two operations may cause internal haemorrhage or collapse of the eye. As a rule, then, the eye can more easily bear the operation when thus divided into two periods, and the different stages of the operation can be performed with more regularity and precision. In old people I perform iridectomy and the subsequent flap downwards, and find the optical effects...
Pagina 52 - I perform iridectomy and extraction at the same sitting, under chloroform, only in traumatic cataract with dislocated lens ; but, as a rule, I make iridectomy six weeks prior to extraction. I rather avoid doing both operations at the same time, because in some cases iridectomy cannot be satisfactorily performed with a large opening — the corners of the section in the iris are apt to be invaginated in the corneal wound, thus giving rise to a larger pupil than the operator intended, which interferes...
Pagina 45 - The object of introducing the knife first in a downward direction is to enlarge the internal opening, and so to avoid the small shelf or corner at the commencement of the wound, which is necessarily left when the knife is carried throughout in a horizontal direction, and which presents an obstacle to the passage of the lens.
Pagina 46 - ... no counter-pressure is applied to the upper part. When the cataract is advancing, the back of the spoon is pressed more strongly upwards until it has reached the centre of the cornea, thus chasing the cataract towards and through the wound.
Pagina 55 - After a few seconds of rest, I seize a fold of the upper eyelid between my fingers, and the lower I depress with the other thumb, and, directing the patient to look down, I exercise pressure on the lower part, exactly in the vertical meridian facing the middle of the coloboma iridis, and with the other fingers through the eyelid I press upon the wound to make it...
Pagina 57 - If the cataract be found adherent (which can be easily diagnosed beforehand), I introduce the hook in the same manner as I introduce the cystotome, first in a horizontal direction ; with it I lacerate again the anterior capsule, to make sure that there is no impediment from that source ; then I slip it flatly behind the lens, turn the point forwards, and draw the lens out.
Pagina 55 - ... the track of the knife, and carrying it to the conjunctival flap, divide it. When operating on the left eye I must here change my position, as the scissors cannot conveniently be used with the left hand, and it is not advisable to divide the conjunctiva with the knife, as it is apt to peel off. The capsule is then largely opened with the cystotome. To facilitate this' process, gentle pressure with my fingers upon the ball is necessary to make the capsule tense.