Ishihara Colour Vision Book 38 plate

Ishihara Colour Vision Book 38 plate.  This series of 38 plates is designed to provide a test which gives a quick and accurate assessmemt of colour vision deficiency of congenital origin.  This is the commonest form of colour vision disturbances.

To stop the colours fading, keep book closed when not in use and avoid exposire to strong light.

Instructions included.