Ishihara Colour Vision Test – 24 Plates.  Developed by Dr. Shinobu Ishihara, the Ishihara Colour Blindness Tests have been used for years by ophthalmologists for screening patients for colour blindness. This short book consists of a set of coloured diagrams with numbers or figures hidden in them. Those with colour blindness will not be able to distinguish the number or figure from the surrounding dots. When used properly, these tests can help you determine the type and degree of colour blindness. The 24 plate chart aids employers in testing for colour blindness. Produced by Western Ophthalmics.

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