. A system of surgery. nd gradual;the pupil contradls and dilates accordingto the degree of light to which it is expo*fed; the bottom of the eye is of a darkcolour, but not of fuch a deep black as inthe gutta ferena ; and the patient can di-ftinguifh light and vivid colours. In Ihort,the fymptoms of this variety of the difeafeare exaftly the fame with thofe of thecommon catarad; only, iaftead of beingwhite, the opacity is black. With refpe(3: to the maturity or ripe-nefs of a cataraft, Mr Pellier pays no re-gard^ either to the colour or confidence ofthe lens: He always confiders the opera-*tio
. A system of surgery. nd gradual;the pupil contradls and dilates accordingto the degree of light to which it is expo*fed; the bottom of the eye is of a darkcolour, but not of fuch a deep black as inthe gutta ferena ; and the patient can di-ftinguifh light and vivid colours. In Ihort,the fymptoms of this variety of the difeafeare exaftly the fame with thofe of thecommon catarad; only, iaftead of beingwhite, the opacity is black. With refpe(3: to the maturity or ripe-nefs of a cataraft, Mr Pellier pays no re-gard^ either to the colour or confidence ofthe lens: He always confiders the opera-*tion as proper, when the opacity has pro-ceeded fo far as to deprive the patient offight, when it is not complicated withfomc other incurable difeafe, and whenthe habit of body is good. He prefersthe method of cure by extradlion, except-ing in a few cafes where the pupil is ex-tremely fmall, when he operates by de-preffion. He always prepares his patientsfor the operation, by confining them to a low : Fiaii S oup Secfi. XlX. Difeafes of the Eyes. 21 low diet for five or fix days ; by givingtwo or three dofes of falts and fenna; andwhen they are plethoric, he takes away tenor twelve ounces of blood. In extracfling the cataracfl, he makes theincifion of the cornea in the ordinary placeand of the ufual fize; but he has fome pe-culiarities in his method of doing it. Inftead of placing his patient with hisface oppofite to a clear light, he feats himwith his fide towards it. If he is to ope-rate upon the left eye, he ufes his righthand, and the right fide of the patient isplaced towards the window. He alwaysufes his left hand in operating upon theright eye ; and in this cafe the patient ismade to fit with his left fide towards thelight. The patient being feated with the eyewhich is not to be operated upon tieddown with a bandage, an afliftant fupportshis head behind, while at the fame time hefixes the eye with the fpeculum, fig. XXXIX. The figure reprefents thein
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Keywords: ., bookauthorbellbenjamin17491806, bookpublishe, booksubjectsurgery
