On the cure of cataract, with a practical summary of the best modes of operating, (Contintental and British).

  • Neill, Hugh
Date:
1848
Catalogue details

Licence: Public Domain Mark

Credit: On the cure of cataract, with a practical summary of the best modes of operating, (Contintental and British). Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    and also because the instrument is not lost sight of. Notwithstanding, it is less satisfactory, because the cornea is easily fretted—especially when the eye is rest- less, which occasions inflammation, suppuration, and dimness of the membrane. The iris too, is oftener wounded, when attempting to seize the obscure particles of the crystalline capsule : also, because it is impossible, or at least very difficult, to cut adhesions which may exist between the iris and the crystalline capsule. In other respects the wound of the sclerotic—of the choroid —and of the retina—which are made in the operation by the sclerotic, are immaterial, unless when fretted. Directdepres- A proceeding which differs little from that described in the first instance, is direct depression fdepressio.J [a] In performing it, the needle is inserted through the sclerotic a little above the transverse diameter of the eye, and the concave part is brought upon the upper portion of the crystalline; afterwards, the lens is plunged from the top directly to the bottom, into the vitreous humor. By this manoeuvre the crystalline capsule is easier removed than by reclination outward and down- ciinicai re- wards. But the advantage is more than counter-balanced: first, by the difficulty of direct depression, owing to the needle being kept with difficulty on the edge of the crystalline, as it often slips upon the anterior or posterior aspect, and sometimes pushes the lens across the pupil into the anterior chamber. Secondly, by the facility [a] See Summary.—II. N. marks: