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Product Definition:
A simple and accurate method for discovering congenital color blindness in
two types: total color blindness and red-green blindness, each in two forms,
complete and incomplete.
Ishihara's test is composed of a series of colored
cards on which numbers or lines of equal shade can be read by a person
with normal color vision but not by someone with defective color
vision. It makes use of the peculiarity that in red-green blindness,
blue and yellow appear remarkably bright compared to red and green. The
color plates are encased in specially designed album-type book for ease
of handling. It includes four special plates for tests to determine the
kind and degree of defect in color blindness. This color blindness test is accepted by
leading authorities.
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Ishihara’s Tests for Color Deficiency
What is
color blindness?
Color blindness (color
vision deficiency) is a condition in which certain colors cannot be
distinguished, and is most commonly due to an inherited condition. Red/Green
color blindness is by far the most common (99%) form and causes problems in
distinguishing reds and greens. Another color deficiency Blue/Yellow also
exists, but is rare (1%) and there is no commonly available test for it.
There is no treatment for color blindness, nor is it usually the cause of
any significant disability. However, it can be very frustrating for
individuals affected by it. Those who are not color blind seem to have the
misconception that color blindness means that a color blind person sees only
in black and white or shades of gray. While this sort of condition is
possible, it is extremely rare.
The Ishihara color test is a test for color blindness. It was named
after its designer, Dr. Shinobu Ishihara (1879-1963), a professor at the
University of Tokyo, who first published his tests in 1917. It makes use of
the peculiarity that in red-green blindness, blue and yellow appear
remarkably bright compared to red and green.
It consists of a number of colored plates to provide color blindness test, on each plate is printed a circle
made of many different sized dots of slightly different colors, spread in a
random manner. Within the dot pattern, and differentiated only by color, is
a number. What, or even if, a number is visible indicates if and what form
of color blindness the viewer has. The full test consists of thirty-eight
plates, but the existence of a deficiency is usually clear after fewer
plates. The Ishihara Color Charts are accepted by leading authorities
worldwide as a simple and accurate test method.
The color blindness test plates are available in an album-type book for ease of handling.
The books are printed in Japan and are protected by international copyright.
How to order
Secure Payment with
PayPal -
Use for USA delivery only (overseas clients contact us
click here)
If you would like to order with a Purchase Order please call
1-800-634-0880 USA or 1-928-778-0840
Hospital and University purchase orders welcome. We accept
government credit cards.
Part Number KM-1257, 10 plates $127.50 Pediatric, Children and Unlettered
persons
The 10 plate book has shapes only, no letters or numbers
Overseas clients please contact us for
shipping instructions.
kappamedical@gmail.com
Part Number KM-1254 (most popular)
14 plates $130.50
Overseas clients please contact us for
shipping instructions.
kappamedical@gmail.com
Part number KM-1255 has 24 plates $195.50
Overseas clients please contact us for
shipping instructions.
kappamedical@gmail.com
Part number KM-1256 has 38 plates $208.35
Overseas clients please contact us for
shipping instructions.
kappamedical@gmail.com
Contact information:
Kappa Medical Inc.
PO Box 11808
Prescott, AZ 86304
1-928-778-0840 phone
1-928-776-9250 fax
e-mail us click here
Pricing subject to change without notice |
