Ishihara's Tests for Colour-Blindness – 38 Plates Edition

Product Information

• Title: Ishihara's Tests for Colour-Blindness – 38 Plates Edition
• Designer: Shinobu Ishihara, M.D.
• Publisher: Kanehara & Co. Ltd
• Publication Year: 1987
• Format: Hardcover (Made in Japan)
• Pages: 38 plates and accompanying booklet
• Language: English
• ISBN-10: 0718600800
• ISBN-13: 978-0718600808 / 9780718600808

Overview

Ishihara's Tests for Colour-Blindness is a pioneering color perception test designed to diagnose red-green color deficiencies. Developed by Shinobu Ishihara, a professor at the University of Tokyo, the test employs pseudo-isochromatic plates—randomly arranged colored dots forming numbers or shapes that are easily identifiable by individuals with normal color vision, but challenging or invisible to those with a red-green deficiency. Originally introduced in 1917, this 38-plate edition remains a standard tool in assessing color vision, with severe deficiencies often detected after just a few plates.

Product Features

• Diagnostic Tool: Specifically designed to detect red-green color blindness using pseudo-isochromatic plates.
• Innovative Design: Features plates that contain numbers or shapes discernible by individuals with normal color vision, while being difficult to interpret for those with color deficiencies.
• Comprehensive Test: Consists of 38 plates, providing a thorough evaluation of color perception; shorter versions of the test also exist.
• Historical Significance: Developed by Shinobu Ishihara, whose work in color vision testing has had a lasting impact on ophthalmology and color diagnostics.
• Durable Format: Hardcover production made in Japan ensures the longevity and reliability of the test materials.

Interesting Facts

• Legacy of Innovation: Shinobu Ishihara designed this test shortly after completing his ophthalmology studies in Germany during World War I, combining elements from earlier tests with his own concept of pseudo-isochromaticism.
• Widely Used: Despite its age, the Ishihara test remains one of the most widely used color blindness tests worldwide.
• Multiple Versions: While this edition includes 38 plates, there are also versions with 10, 14, or 24 plates, and some tests even require tracing a line instead of reading a number.

Publishers

Published by Kanehara & Co. Ltd in 1987. All rights reserved as per the provided details.

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