Ishihara Charts

Overview

Recognized as the global clinical standard for color vision screening, the Ishihara Color Vision Test Book delivers rapid, reliable identification of congenital red-green color deficiencies. Each pseudoisochromatic plate contains a matrix of varied color dots that form numbers or winding paths discernible to normal color vision, while revealing specific patterns or omissions to color-deficient patients. Available in standard 14-plate, 24-plate, and 38-plate editions, as well as unlettered path versions for pediatric and non-verbal screening, this diagnostic tool allows practitioners to evaluate color perception speed, accuracy, and severity. Manufactured in strict compliance with ISO 13485 and international ophthalmic diagnostic standards, it is an essential assessment tool for eye clinics, occupational health screenings, aviation medical checks, and driver licensing centers.