Ta all who value their sight : a few practical suggestions and illustrations ... / by R.B. Bate.

  • Bate, R. B. (Robert Brettell)
Date:
1830
Catalogue details

Licence: Public Domain Mark

Credit: Ta all who value their sight : a few practical suggestions and illustrations ... / by R.B. Bate. 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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    glass employed, may be made conducive to the adaptation but should not *° somewhat increased distances, be applied too l^owever, a premature apphcation of glasses will con- soon, firm and even induce this habit of short-sightedness, its confirmation should be fully ascertained before they are applied; and when it is so, they cannot be applied too soon. Much may be done to prevent or to retard the formation of this habit, particularly in infancy*, by out-door exercise, using all occasions to excite attention to remote objects, and when in-doors, by placing the most attractive at the great- D'sad 1 distance. of near-si^<rht-^ '^^^ reader will, it is hoped, be now convinced of the in- ednessNvhen justice of ridiculing or discouraging the use of spectacles in unassisted: near-sighted persons, especially when he considers that the beauties of nature are shut out from viany of themf; that to such the stars are indistinguishable, and the moon ap- pears a mass of luminous vapour of indeterminable form, varying only its quantity of light, instead of exhibiting that beautiful variety of phases which awakens inquiry into the construction of our system, and which affords to the learned, as well as to the unlearned, one of the most ready confir- mations of the great truths which science has demonstrated: when he likewise considers that the variations of landscape and perspective are almost lost to them, and that the judi- cious use of spectacles, whilst it displays all these, will im- prove instead of injuring the sight, he will rather be disposed to applaud and recommend it. wL^'^ro^'l^r It is also hoped that the near-sighted himself will not Tssi^sted'T^' ^ regiret his condition, when he finds that, with proper aid, he can equally command the view of distant objects; while, without aid, he possesses a better view of near ones than those whose sight is called perfect. And it is hoped that the mischievous consequences resulting from the use of one ^•^^jy^^ eye only will deter all persons of this description of sight ployed from persevering in such practice, and induce those who will not be persuaded to the use of spectacles to comply with the custom, now so happily prevalent, of using foldi?ig * This may be thought too soon by those who are unacquainted with the numerous instances in which this habit is a family complaint. •f We may obtain a very correct idea of the condition of any near- sighted person, by selecting a magnifying glass of such power as, when held close to the eye, will enable us to read a small prmt at the distance which-such person reads at without a glass, the image of the print wiu then appear of the same size to. us as it appears to him, and distant oo- jects luill be cqtiallt/ indistinct.