Bauhaus-Universität Weimar

Titel:
Tests for Color Perception, Visual and Auditory Acuity: Used in Railway, Miltary and Marine Services, also in the Arts and Sciences, for Research, Experimentation, Educational and Vocational Guidance
Person:
Stoelting, C. H.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit13721/15/
C. H. STOELTING CO., CHICAGO, ILL. U. S. A. 
15 
Number Price 
14307. Audiometer, McCallie’s. This is a portable instrument and the sound is produced by a 
metal hammer falling upon a small bell. As it falls from a definite height, the sound 
produced is always of the same intensity. The aperture emitting the sound is con¬ 
trolled by a disk graduated in 100' equal parts. See catalog of Psychological and 
Physiological Apparatus and Supplies............................................. $ 95.00 
No. 14301. 
BOOKS. 
46121. “Color Blindness: Its Relations to Other Ocular Conditions and the Bearing on Public 
Health of Tests for Color Sense Acuity,” by George L. Collins, M. D., U. S. P. H. S. 
Public Health Bulletin No. 92, 1918............................................... .35 
46121A. “Colour-Blindness—With a Comparison of Different Methods of Testing Colour-Blind¬ 
ness,” by Mary Collins, Ph. D..................................................... 5.00 
12319C. “Colour Blindness and Colour Perception,” by F. W. Edridge-Green, M. D........... 5.00 
12319B. “The Hunterian Lectures on Colour-Vision and Colour-Blindness,” by F. W. Edridge- 
Green, M. D..................................................................... 2.50 
46168. “Colour and Colour Theories,” by Christine Ladd-Franklin, Ph. D.................... 3.90 
46308. “Colour-Blindness—Its Dangers and Its Detection,” by B. Jay Jeffries, M. D.......... 5.00 
659D. “Color-Vision and Color-Blindness,” by J. Ellis Jennings, M. D..................... 1.50 
46564. “The Color Sense Tester,” by E. W. Scripture, Ph. D............................... .50 
THE discovery of refractive errors is a comparatively simple procedure, although 
their correction frequently calls for extremely high professional skill on the part 
of the oculist and optometrist. Ordinarily, the work of detecting refractive 
errors may be done with visual acuity and astigmatic charts. Muscular imbalances 
and scotoma detection require more extensive equipment. The visual acuity test 
charts which we list are those usually used by the railroads, military and marine 
service, and have the approval of the authorities of the different organizations for 
which they were devised. Occasionally the examiner is called upon to deal with 
malingerers, and so requires a test that will prove conclusively that the subject is 
feigning blindness or defective vision. For this purpose a few of the more effective 
tests of this type have been included. 
In the field of tests for color perception, the tyro is often at a loss for a choice. 
One examiner, who has succeeded with a certain test by having acquired an intimate 
knowledge of its possibilities and limitations, will frequently insist on having dis¬ 
covered the only test of value. Another examiner, equally as critical and experienced, 
will insist with the same assurance that the particular test he is using cannot be 
improved upon. Some types of tests are better for one purpose than for another, 
but as a matter of fact, the careful examiner will not rely on any one test for all 
kinds of work. A check with another test—the same procedure as followed in test¬ 
ing for errors of refraction and in mental testing—is the only safe way to arrive at 
a reliable diagnosis. Some of the tests are extremely reliable for rapid detection 
and differentiation; whereas, on the other hand, where the examiner has to contend 
with subnormal color perception or even color ignorance, other more extensive and re¬ 
fined tests may be desirable. Due to a possible central scotoma, amblyopia, or other 
pathological condition, it is advisable to make both “near” and “distant” tests for 
color perception.
        

Nutzerhinweis

Sehr geehrte Benutzer,

aufgrund der aktuellen Entwicklungen in der Webtechnologie, die im Goobi viewer verwendet wird, unterstützt die Software den von Ihnen verwendeten Browser nicht mehr.

Bitte benutzen Sie einen der folgenden Browser, um diese Seite korrekt darstellen zu können.

Vielen Dank für Ihr Verständnis.