The series of plates designed as a test for colour deficiency / by Shinobu Ishihara.

Author/creator Ishihara, Shinobu
Format Book
Edition24 plates edition.
PublicationAtlanta, GA : Graham-Field, [2011]
ManufactureTokyo, Japan : Kanehara Trading Inc.
Description24 leaves of plates : color illustrations ; 20 cm + 1 pamphlet (9 unnumbered pages ; 18 cm)
Subjects

Cover title Ishihara's tests for colour deficiency
Portion of title Tests for colour deficiency
Subject 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, 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.
General note"Item 1255"--Back cover.
Publisher number13-1255 Graham-Field

Availability

Library Location Call Number Status Item Actions
Laupus Ask for item at Laupus Circulation Desk WW 150 I795S 2011 ✔ Available