ISHIHARA Test Chart Books for Color Deficiency (38 Plate) 5-off-10 digital instrument that can stand

digital instrument that can stand up to the toughest use

5V bulb (only) for use with the Barrington Diagnostics Mini-Otoscopes

Alcohol-Free — Perfect for Equipment & Other Hard

4 Quart Container

ISHIHARA Test Chart Books for Color Deficiency (38 Plate) 5-off-10 digital instrument that can stand(38 Plate) 25 numbers and 13 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