COLOR BLINDNESS TEST ,ISHIHARA
For revealing congenital color blindness,
The Ishihara test is a color vision test for detection of red–green color deficiencies.
Comprises a series of several plates in a book form. Quickly and easily determine if any one is color-blind with just a few seconds of his time
Each plate comprises a mosaic background of Dotson which is printed, in mosaic form of another color, a design, e.g a numeral
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