ISHIHARA Test Chart Books for Color Deficiency (24 Plate) SC For each occurrence

For each occurrence

Unlike most AED units

Heart Pulse Rate: ±2 bpm

Compares to Vaseline

This easy-to-use

ISHIHARA Test Chart Books for Color Deficiency (24 Plate) SC For each occurrence(24 Plate) 17 numbers and 7 trails Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness of two types: total 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