38 Plates Optometry Color Blindness Test Book

Main features: 

-A professional test book, which is a simple and accurate method for discovering congenital color blindness and red-green blindness, each in two forms, complete and incomplete.


-It 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. Detailed instructions included.


 -Individuals with color vision defect should see a different figure from individuals with normal color vision.


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