The series of plates designed as a test for colour deficiency / by Shinobu Ishihara.
| Author/creator | Ishihara, Shinobu |
| Format | Book |
| Edition | 24 plates edition. |
| Publication | Atlanta, GA : Graham-Field, [2011] |
| Manufacture | Tokyo, Japan : Kanehara Trading Inc. |
| Description | 24 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 number | 13-1255 Graham-Field |
Availability
| Library | Location | Call Number | Status | Item Actions |
|---|---|---|---|---|
| Laupus | Ask for item at Laupus Circulation Desk | WW 150 I795S 2011 | ✔ Available |