Graham-Field 1256 Ishihara Test Chart Books, for Color Deficiency - 38 Plate Book (Complete Edition)Ishihara Pseudo-Isochromatic Tests are the most widely used standard of color vision screening in a book form. Instruction are included.Brand: Graham-Field
Graham-Field 1256 Ishihara Test Chart Books, for Color Deficiency - 38 Plate Book (Complete Edition)
Ishihara Pseudo-Isochromatic Tests are the most widely used standard of color vision screening in a book form. Instruction are included. Brand: Graham-Field