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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    by a considerable surface. Sometimes one- halt* of the border of the pupil is involved ; but that part of the border is generally free from adhesion, which is situated towards the transparent part of the cornea. This part, I shall suppose, as in the last opera- tion, to occupy the external angle of the eye. The consequence of considerable adhe- sions, existing between the iris and cornea, is, that the iris frequently cannot be pro- truded through an opening in the cornea to a sufficient extent to form, by its removal, an efficient artificial pupil, as in the operation already described. The attempt, however, may always be made, and the protruded part be cut off, however small it may be. If this expedient should not suc- ceed, the next step must be to introduce the small hook through the part of the pupil, which does not adhere to the cornea, and to lay hold of the border of the iris. With a little care this membrane may generally be drawn out of the puncture in the cornea,