Ishihara Test Chart Book for Color Deficiency 38 Plates

Description

* 38 Plate Book with Instruction Manual and 1 eye Occluders.EYE OCCLUDER.* 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.* Includes four special plates for tests to determine the kind and degree of defect in color vision.* Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green.* Color plates encased in specially designed album-type books for ease of handling.