Refraction of the eye : its diagnosis and the correction of its errors / by A. Stanford Morton.

  • Morton, A. Stanford.
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: Refraction of the eye : its diagnosis and the correction of its errors / by A. Stanford Morton. Source: Wellcome Collection.

    13/122 (page 1)
    INTRODUCTION. These pages have been written in the hope that they may be of service to beginners, and to physicians and general practitioners, who, systematically using the ophthalmo- scope in their investigation of disease, must avail them- selves of the information thereby afforded regarding the patient's refraction, in order that due allowance may be made for any error which exists. If patients can assist by their answers, much valuable information is afforded by the use of test-types and glasses, a description of which, with the information to be derived therefrom, has been therefore introduced. Information is given on the subject of the glasses re- quired in the more ordinary cases, but for a knowledge of the various diseases which accompany and complicate many of the errors of refraction, the reader is referred to the works already published on that subject, to the study of which these notes are intended to prepare the way. So essential is a constant remembrance of some of the facts hereafter mentioned, that, at the risk of tautology, they have been kept constantly before the reader. The plan which has been found so useful in other branches of medical stvidy has been adopted here—viz., that of working