Practical observations on the formation of an artificial pupil, in several deranged states of the eye : to which are annexed, remarks on the extraction of soft cataracts, and those of the membraneous kind, through a puncture in the cornea : illustrated by plates / by Benjamin Gibson.

  • Gibson, Benjamin, 1774-1812.
Date:
1811
Catalogue details

Licence: Public Domain Mark

Credit: Practical observations on the formation of an artificial pupil, in several deranged states of the eye : to which are annexed, remarks on the extraction of soft cataracts, and those of the membraneous kind, through a puncture in the cornea : illustrated by plates / by Benjamin Gibson. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    traction and dilatation of the natural pupil. It appears to me, that, although the new pupil may sometimes close, when the ins is in a morbid state, yet that this membrane, a few days after an operation, has very little disposition to contract, in whatever situation the artificial pupil may have been made. My reason for forming the artificial pupil towards the external angle of the eye, when circumstances allow it, is, that in- struments can be used in this part with more facility, than in any other part of the cornea; and every advantage is, at the same time, derived from the operation. When this part of the eye has been found opaque, I have formed the pupil, in several cases, both at the inferior part of the cornea, and towards the internal angle of. the eye. I did not however observe, that my patients saw at all more distinctly. On the contrary, when the artificial pupil was formed towards the internal angle of the eye, the sight in my opinion was less extensive; the nose appearing in some measure to curtail the field of vision. I