Our eyes, and how to take care of them / by Henry W. Williams.

  • Williams, Henry W. (Henry Willard), 1821-1895.
Date:
1871
Catalogue details

Licence: Public Domain Mark

Credit: Our eyes, and how to take care of them / by Henry W. Williams. 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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    • Soft cataract may be removed with little risk by an operation; but it is safer, in many instances, to operate by such a method as will require considerable time for the sub- sequent absorption and disappearance of the opaque lens, rather than to attempt its imme- diate removal. - The larger number of cataracts are found in persons beyond middle life ; the disease affecting those of every condition and occu- pation, without apparent relation to the amount or nature of the use they may have made of their eyes. It is probably a result of modifications in the nutrition of the lens, causing it to become opaque, just as the hair becomes white in some persons with advan- cing age. Like these changes in the hair, it is often hereditary. The progress of the cloudiness, which gradually shuts out perception of objects, varies greatly in different cases. This cir- cumstance, and the fact that the vision may often be temporarily improved by palliatives,