Eye Vision testing Ishihara Test Chart Book for Color Deficiency with 38 Plates (Multicolor)

About this item

• Color plates encased in specially designed album-type books for ease of handling. Detailed instructions included.
• Includes four special plates for tests to determine the kind and degree of defect in color vision.
• Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red-green blindness, each in two forms, complete and incomplete.
• Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green.