Die Institute und Praxis der Chirurgie: die Umrisse einer Vortragsreihe. rsons sind die meisten vorbehaltlich der Katarakt, obwohl die diseasemay zu jeder Zeit des Lebens auftreten; in der Tat neue geborene infantsare nicht ausgenommen von es und es hat manchmal passiert thatall den Kindern eine zahlreiche Familie wurden withcataracts in beide Augen geboren. Personen, deren Augen sind viel ex - lebendige und reflektierte Licht gestellt werden, sagte peculiarlyliable zu Grauer Star zu sein. Die Existenz von Katarakt kann allgemein festgestellt werden, indem die folgenden s) mptoms. In der Beginn, Thepatient ist oft sinnvoll von einer Verringerung der Seufzer

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The institutes and practice of surgery: being the outlines of a course of lectures . rsons are most subject to cataract, though the diseasemay occur at any period of life; indeed new-born infantsare not exempt from it, and it has sometimes happened thatall the children of a numerous family have been born withcataracts in both eyes. Persons whose eyes are much ex-posed to vivid and reflected lights are said to be peculiarlyliable to cataract. The existence of cataract may be determined generally, by the following s)mptoms. In the commencement, thepatient is often sensible of a diminution of sight long be-fore any opacity can be observed behind the pupil. Ob-jects, moreover, especially white ones, appear to him as ifenveloped in mist or smoke, and when the eye is suddenlyexposed to a strong light, vision is nearly destroyed. Ina dull light, on the contrary, vision is more distinct, be-cause the pupil being expanded, the rays of light, besidestheir increased quantity, pass through the thin margin ofthe lens. When the lens is completely opake, its colour I I, in- »? .1.;. Cataract. 193 will commonly indicate the nature of the disease. Theblack cataract, however, is very liable to be mistaken foramaurosis. Cataracts are said to have been formed verysuddenly, or in the course of a night, without any obviouscause; but I am inclined to believe this to be erroneous, and that the disease has existed, at least in one eye, forsome time, without the patient being aware of its presence, and that the discovery of it has been purely accidental. Treatment of Cataract. Although repeated attempts have been made, both byinternal remedies and by local applications, to removecataract, there is no well-attested instance, I believe, onrecord, of a cure having been effected except by an opera-tion. There are two or three different operations now inuse, each of which it will be proper to describe. Couching or dejwesaion of the cataract, an operationpractised, there is reason to believe, long be

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