The theory of ocular defects and of spectacles / translated from the German of Hermann Scheffler by Robert Brudenell Carter with prefatory notes and a chapter of practical instructions.

  • Scheffler, Hermann, 1820-1903.
Date:
1869
Catalogue details

Licence: Public Domain Mark

Credit: The theory of ocular defects and of spectacles / translated from the German of Hermann Scheffler by Robert Brudenell Carter with prefatory notes and a chapter of practical instructions. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    PREFACE. Early in the past year, I received from Dr. Scheffler a copy of his Theorie der Aiigenfehler und der Brille, then just published, with a request that I would endeavour to make arrangements for the appearance of an English version. The labours of Professor Bonders, which were fir.st made known in this country in 18C2, and which were fully laid before the profession in 1864, in his great work on The Anomalies of Refraction and Accommodation of the Eye, pro- duced so great an advance in this department of scientific inquiry as to lead to the impression, among many, that little more remained to be achieved. The contrast between the results afforded by the empirical employment of spectacles in former times, and those afforded by their proper adaptation subsequently, was certainly so great as to explain, if not to justify, the general prevalence of such a belief. In common, however, I think, with many other ophthalmic surgeons, I had gradually become convinced that the subject was not exhausted, and that the distinguished Utrecht Professor had left some room for others, even in,the field that he had cultivated with such signal success. Cases every notv and then presented themselves in which the facts would not perfectly harmonize with the doctrines, and in which there Avas mani- festly present some additional unknown quantity, some disturb- ing factor, of which the doctrines took no account. Spectacles that seemed properly adapted to the requirements of the eyes were found to become sources of discomfort; and a fresh and