Ishihara's color perception test charts are recognized internationally as a highly reliable method of determining color deficiency. With normal color perception, the images and numbers will all be visible. Each color test plate in this hard bound. Book is specially printed to measure incrementally higher color sensitivity and specificity. The Ishihara Color Test is available in 14, 24, or 38 Plate Editions.
Ishihara Book, Ophthalmic Equipment, Ophthalmic Equipment manufacturers