Ishihara Test Chart Book, for Color Deficiency Size:24 Plate The BETA200 S LED has

The BETA200 S LED has virtually unlimited hours of working life (up to 100

high-resolution (1920x1080)

but may also be used for Argon Laser Trabeculoplasty and all other trabeculoplasty procedures

Notations include actual letter size for 10 foot and 3 meter measurements which are found on left side of the chart

Ishihara Test Chart Book, for Color Deficiency Size:24 Plate The BETA200 S LED hasManufacturer 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