Ishihara Colour Deficiency Test with 14 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.
Ishihara test with 14 plates
The 14-plate (Concised) edition. On the average, charts of highest accuracy were selected from the 38 plate edition to conduct minimum examinations of color deficiency..
Are you looking for the version with 24 or 38 plates? Please click on the following links: