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Ishihara Color Test Instructions Plates 1 – 17 each contain a number, plates 18 – 24 contain one or two wiggly lines.
Ishihara Test for Color Blindness
Please note that the Vischeck products below are offered free of charge with no warranty or guarantee of any sort. Legal disclaimers aside, we think they are useful for visual simulation of color-deficient vision and hope that you might also find them interesting and useful. Items available for download: Please note: all downloads are distributed as zip archives. You will need a zip/unzip utility to extract the files once you download the archive. If you don't already have an unzip utility, try: