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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    ( 3* ) like experiments ; though no great de^ pendance fhould be placed upon them, But, after all, the mod certain methoc of curing the cataradl is by the remova tion commonly ufed for the purpofe; thai is, by couching, or extraction ; and ] wifih it to be carefully attended to, thai where the fight is wholly obflru&ed, it is not poflible that it fhould be reftored, bul by one or other of thefe operations. The firft mode of operating upon the cataradt, of which we have any know- ledge, was by couching. In this way, the opake fubflance, which forms the cata- raCt, is difplaced, and depofited at the bottom of the eye; fo that the rays of light have again free accefs to the retina. This operation is of very early antiquity; and was performed long before the true nature of the difeafe itfelf was under- flood : it being mentioned by Celfus, who lived at or about the commence- of it, in one of the two ways of opera* ment