Ishihara Test Chart Books for Color Deficiency 10 Plates Unlettered Person

• Ishihara's Color perception test charts are recognized internationally as 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 specificatiy.
• Popular and efficient test for red/green color vision deficiency quickly differentiates between congenital and aquired defects.

Product description The Ishihara colour perception test for red-green color deficiencies. The test consists of a number of colored plates containing a circle of dots appearing randomized in color and size. Within the pattern are dots which form a number or shape clearly visible to those with normal colour vision, and invisible, or difficult to see, to those with a red-green colour vision defect, or the other way around. 38 and 24 Plate versions are available. Legal Disclaimer Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.