Scifa Ishihara Test Chart Book  for color deficiency

Scifa Ishihara Test Chart Book 

Brand: Scifa

Part Number: Scifa-ITCD-BN273

Details: The test consists of a number of colored plates, called Ishihara 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. The full test consists of 38 plates, but the existence of a deficiency is usually clear after a few plates. individuals with color vision defects should see a different figure from individuals with normal color vision. Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green Diagnostic plates: intended to determine the type of color vision defect Ishihara Test Chart Books for Color Deficiency 38 Plates with user manual. ❖Feature:- ❖Each color test plate in this hardbound. ❖The book is specially printed to measure incrementally higher color sensitivity and specificity. ❖Ishihara's color perception test charts are recognized internationally as a highly reliable method of determining color deficiency With normal color perception, the images and numbers will all be visible. ❖Ishihara test for color blindness, 38 plate edition Popular and efficient test for red/green color vision deficiency Quickly differentiates between congenital and acquired defects.

Package Dimensions: 6.7 x 5.0 x 5.0 inches