The Ishihara Colour Deficiency Test is ideal for commercial/ industrial colour screening for protan and dutan defects.

Patients must identify numbers or patterns formed in a matrix of small coloured dots varying in colour and intensity (pseudo-ischromatic plates).

Three editions are available:

• 38 plate for detailed investigation - ACEY006A

• 24 plate for quick screening - ACEY006

• 14 plate concise edition - ACEY006B