This innovative new colored eye chart simultaneously screen for color blindness while testing visual acuity. Designed through the collaborative effort of a physician and an engineer in color technology, this patented eye chart represents a milestone breakthrough in visual screening. This Vision test eye chart has proven effective in screening the two most common types of red-green color blindness: protanopia/protanomalia and deuteranopia/deuteranomalia, as well as the extremely rare total color blindness. Eye chart measures 11x23" and printed on heavy, fully laminated stock, each poster is fitted with a metal eyelet for hanging.