The art of preserving the sight unimpaired to an extreme old age, and of re-establishing and strengthening it when it becomes weak : with instructions how to proceed in accidental cases which do not require the assistance of professional men, and the mode of treatment proper for the eyes during, and immediately after the small pox ; to which are added observations on the inconveniences and dangers arising from the use of common spectacles &c. &c. / by an experienced oculist.

  • Georg Joseph Beer
Date:
1815
Catalogue details

Licence: Public Domain Mark

Credit: The art of preserving the sight unimpaired to an extreme old age, and of re-establishing and strengthening it when it becomes weak : with instructions how to proceed in accidental cases which do not require the assistance of professional men, and the mode of treatment proper for the eyes during, and immediately after the small pox ; to which are added observations on the inconveniences and dangers arising from the use of common spectacles &c. &c. / by an experienced oculist. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    ing the position of the glass with respect to the eye, or to the object on which a person is employed. From thence also, i-as I have noticed in an early part of this essay, the eye suffers more or less from the external pressure of the magnifier, according to its application being of long or of shorter duration, A slight reflec- tion on these facts must convince ray readers how readily the eyes may he af- fected with the in-ade of iise, even though the Speeles of occupation should not öf itself be instantly prejiidicial to thegood State of the visual faculiy. On this part of the subject, then, I «hall lay down a fourtli ru]e, which is also of some imporlance, That whoever is ohhged to pursue a constant labour, one that requires the use of magnißers, oiight alicai/s to have them fastened with a ribband, or icith such a species of moiaitiyig as shall kecp them in the same position during th^ ichole period of their application.