Our eyes : and how to preserve them from infancy to old age with special information about spectacles / by John Browning.

  • Browning, J. D. (John Dudley), 1942-
Date:
1891
Catalogue details

Licence: Public Domain Mark

Credit: Our eyes : and how to preserve them from infancy to old age with special information about spectacles / by John Browning. Source: Wellcome Collection.

    53/168 (page 49)
    METHOD OF TESTING THE SIGHT. way by correspondence, when the eyes of the correspondents differed greatly in focus. I shall have great pleasure in forwarding full particulars to any person, post free. The testimonials at the end of this work show the great satisfac- tion this system is giving to my numerous clients, whose number is increasing constantly. BROWNING’S METHOD OF TESTING THE SIGHT. Fig 32.—The Optometer, I here give three engravings of the principal instruments I send out, in practising my method of suiting the sight by correspondence. They are called the Optometer, the Width- Measurer, and the Short-Sight Test-Lenses (Figs. 32, 33, and 34). I cannot, however, give the method I adopt in using these instruments, because it varies with the varying condition of the sight of the applicants. D