Ishihara Colour Vision Test Book for Color Deficiency 24 Plates with User Manual electronics3 2004 - 2014 Scion xB

2004 - 2014 Scion xB

CE ROHS UL94V-0/94-2

black button

pls kindly check the size carefully before purchasing

Ishihara Colour Vision Test Book for Color Deficiency 24 Plates with User Manual electronics3 2004 - 2014 Scion xBIshihara Colour Vision Test Book for Color Deficiency 24 Plates with User Manual The test consists of a number of colored plates, called Ishihara test plates, each of which contains a circle of dots appearing randomized in color and size. Within the pattern are dots which form a number or shape clearly visible to those with normal color vision, and invisible, or difficult to see, to those with a red green color vision defect, or the other way around.