The refraction of the eye : including a complete treatise on opthalmometry; a clinical text-book for students and practitioners / By A. Edward Davis; with one hundred and nineteen engravings, ninety-seven of which are original.

  • Davis, Achilles Edward, 1866-1941.
Date:
1900
Catalogue details

Licence: Public Domain Mark

Credit: The refraction of the eye : including a complete treatise on opthalmometry; a clinical text-book for students and practitioners / By A. Edward Davis; with one hundred and nineteen engravings, ninety-seven of which are original. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

    12/458
    tried to show the virtues of the ophthalmometer, while I have not omitted to note its limitations. In that way, I have hoped to present the instrument in the true light and to justify the claims made for it. In composing the book, I have departed from the beaten path, and have devoted the greater part of it to the report in detail of clinical cases illustrating practical points in the use of the ophthalmometer. In other words, instead of a theoreti- cal and didactical discourse, I place a sufficient number of cases themselves (one hundred and fifty in all) before the eye of the reader, which are reported in full, so as to be easily understood. To be more explicit still, I may say I have made my teaching correspond, so far as it is possible in a book, to the instruction that we give at the Post-Graduate Medical School, where the instruction is entirely clinical. I have given an Index of Cases at the close of the book, so that the reader who has a case that he does not fully under- stand, may turn to this index and look for cases in it similar to his, and then refer to the full report in the body of the book. By comparison he may get a solution of the case that is puz- zling him. I have done this in order that the student may not be lost with a case, as is too often true when he refers to the larger text-books wherein no such index is given. It has been my experience that more can be taught the student by one concrete case illustrating a point in question, than by many pages of abstract deduction concerning cases which have never been presented to the student himself. After giving a brief description of the instrument and the rules for its use, with some general considerations, I have treated successively, in separate chapters, of its practical use in cases of Simple Hypermetropia and Hypermetropic Astigmatism, Com- pound Hypermetropic Astigmatism, Simple Myopia and Myopic Astigmatism, Compound Myopic Astigmatism, and Mixed As- tigmatism, giving many cases and using diagrams to show the