Ishihara test folder for colour sense disorders

The classic panels for testing disorders of the sense of colour according to Prof. Dr. Ishihara. The normally sighted recognise other numbers and figures than, for example, the red-green colourblind or the red- or green-weak. The teacher tests possible anomalies of the colour sense with his pupils and justifies them on the basis of the reference points nuanced in colour in the test charts. Folder 22 x 15 cm with 14 test charts and instructions (Germany only, other languages available upon request).