30+ Ishihara Test Chart Books For Color Deficiency Background. .(multicolour)ishihara''s color perception test charts are recognized internationally as highly reliable method of determining color deficiency. It is also well known, that even people with normal hereafter the 38 ishihara plates will be shown.
Please note that computer based color blindness tests do not give the same results as the original tests.
Ishihara book for colour blindness 38 plates edition. .(multicolour)ishihara''s color perception test charts are recognized internationally as highly reliable method of determining color deficiency. Please note that computer based color blindness tests do not give the same results as the original tests. Good for color blind people that need to pass the test.