A dissertation on the theory and cure of the cataract : in which the practice of extraction is supported; and that operation, in its present improved state, is particularly described / by Jonathan Wathen.

  • Wathen, Jonathan, 1729-1808.
Date:
1785
Catalogue details

Licence: Public Domain Mark

Credit: A dissertation on the theory and cure of the cataract : in which the practice of extraction is supported; and that operation, in its present improved state, is particularly described / by Jonathan Wathen. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    always appears confufed, but never cloud- ed; and this confufion is at any time in- ftantly removed by a convex glafs, if the focus is fuited to the eye affedted. It will call fome light on the fubjedt, to enter a little here into the conftruc- tion of the globe of the eye; of which the following defcription may fuffice. The Eye defcribed. The globe of the eye is compofed of three proper coats—the fclerotica, cho- roides, and retina—and contains three tranfparent humours—the aqueous, the cryftalline, and the vitreous— The fclerotica is the outermofl: of thefe tunics. It is of a thick and firm texture : quite opake in its posterior and far greater part; but in its anterior, tranf- C 3 parent;