The practical details of cataract extraction / by H. Herbert.

  • Herbert, H.
Date:
1903
Catalogue details

Licence: In copyright

Credit: The practical details of cataract extraction / by H. Herbert. Source: Wellcome Collection.

    101/142 page 79
    there is no reason to suspect the same of the more common lower degrees. I have noticed an especially alarming amount of exudation, but very rapidly re- absorbed, in very anaemic patients occasionally operated upon. No pain is complained of, and the final result of the worst cases, after active treatment and a some- what prolonged convalescence, is a varying amount of irregularly disposed pupillary membrane, adherent to iris at one or more points. By early minute inspection, and by rapid dilatation of the pupil in all cases where any trace of exudation is found, the dividing line is lost between the more trivial reactions and those which with- out treatment would develop into definite attacks of iritis, with symptoms and sequelae. The formation of small posterior synechiae merely at the raw edges of the coloboma, in combined extraction, or connecting the pupillary margin with the slit in the capsule, is not evidence of iritis. Other synechiae may be left by imper- fect absorption of blood-clot. A large quantity of cortical matter may often be left behind, with no effect whatever on the iris,* if only the pupil be at once dilated. But if, perhaps owing to some additional cause of irritation, rapid dilatation of the pupil is not obtained, the lens-matter is then persistently in contact with the iris, and may serve to keep up a definite chronic inflammation. In spite of treatment, the lens- remnants may then gradually become hidden by a thin layer of lymph, adherent to the iris, which afterwards con- tracts, narrowing and occluding both coloboma and pupil, and drawing them up towards the site of the wound. Venous congestion from constant coughing in chronic * The immediate effect upon the iris of a large quantity of unripe cortex appears scarcely greater than that of almost microscopic remnants of riper material.
    No text description is available for this image
    No text description is available for this image
    No text description is available for this image