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.

    129/142 (page 107)
    seen, a limitation of the field of projection would suggest detachment of retina, especially if the tension of the eye were low, and would contra-indicate operation. In any operation in high myopia particular care is taken to avoid loss of vitreous. DISLOCATED LENSES. The ill effects of ‘ couching ’ and ‘ reclination ’ of cataracts by vaids and hakims are seen all over India. I have extracted one or two lenses which had returned to their normal position after such operation, but have not cared to interfere otherwise.* Lenses dislocated spontaneously or traumatically into the anterior chamber are met with everywhere. In India such cases are fre- quently brought for the relief of pain only, after the lens has become opaque, and after the possibility of restora- tion of sight has been lost through secondary glaucoma. In extracting a lens from the anterior chamber, if the incision be carefully made with a very narrow knife, there is usually no need for special measures to prevent the lens slipping back into the vitreous, such as the fixing of the lens with a needle, or operation with patient in the semi-prone position. If it has lain long in its abnormal position, it may have become firmly fixed to the cornea. In attempting to remove a lens partially luxated downwards in the posterior chamber, I found it so firmly adherent below that only partial removal with the scoop was possible, A good deal of cortex was left and much vitreous lost, and the resulting vision was worse than before operation. * Captain Henry Smith, reports sixty-nine extractions of couched lenses {Indian Medical Gazette, xxxvi. 224).