Ishihara colour deficiency test with 38 plates. Tests for protan & deutan defects. Patients must identify numbers or patterns formed in a matrix of small coloured dots varying in colour & intensity (pseudo-isochromatic plates). Ideal for commercial/industrial colour screening.
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Ishihara Colour Deficiency Test
The test consists of a number of colored plates, called Ishihara vision plates, each of which contains 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 color vision, and invisible, or difficult to see, to those with a red-green color vision defect, or the other way around. The full Ishihara test consists of 38 plates, but the existence of a deficiency is usually clear after a few plates. There is also the smaller test consisting only of 14 or 24 plates.
Ishihara test with 38 plates
The Ishihara 38-Plate(Complete) Edition is used principally by Ophthalmologists in order to classify completely the type of color dificiency.
Are you looking for the version with 14 or 24 plates? Please click on the following links: