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The Ishihara Colour Deficiency Test is ideal for commercial/ industrial colour screening for protan and dutan defects.
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Patients must identify numbers or patterns formed in a matrix of small
coloured dots varying in colour and intensity (pseudo-ischromatic
plates).
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The third type is the 14-plate(Concise)edition. On the average, charts
of highest accuracy were selected from the 38 plate(Complete) Edition to
conduct minimum examinations of color deficiency.
Disclaimer: The actual color of the physical product may slightly vary due to the deviation of lighting sources, photography or your device display settings.