Ishihara Test Chart Book, for Color Deficiency LEA Numbers The unit can store up

The unit can store up to 33 actual and biased bilateral corneal measurements

Go wireless

standard deviation and L/R or OD/OS notation in seconds

Manufacturer Part Number: 20200

Ishihara Test Chart Book, for Color Deficiency LEA Numbers The unit can store upManufacturer Part Number: 1257 (10 Plate), 1254 (14 Plate), 1255 (24 Plate), 1256 (38 Plate) 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