Retinoscopy : (or shadow test) in the determination of refraction at one meter distance, with the plane mirror / by James Thorington.

  • Thorington, James, 1858-1944.
Date:
1899
Catalogue details

Licence: Public Domain Mark

Credit: Retinoscopy : (or shadow test) in the determination of refraction at one meter distance, with the plane mirror / by James Thorington. Source: Wellcome Collection.

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    RETINOSCOPY. CHAPTER I. DEFINITION.—NAMES.—PRINCIPLE AND VALUE OF RETINOSCOPY .-SUGGESTIONS TO THE BEGINNER. Definition.—Retinoscopy (see preface to first edition) may be defined as the method of estimating the refraction of an eye by reflecting into it rays of light from a plane or concave mirror, and observing the movement which the retinal illumination makes by rotating the mirror. Names.—Dioptroscopy, fundus-reflex test,* kera- toscopy, fantoscopy, pupilloscopy, retinophotoscopy, retinoskiascopy, skiascopy, umbrascopy, koroscopy, etc., are some of the other names given to this method of refraction, and their number and greater or less inappropriateness have had much to do, no doubt, with keeping retinoscopy in the background of ophthalmology instead of giving it the promi- nence which it more justly deserved and now re- ceives. * Suggested by Dr. C. A. Oliver.