AlbaHealth® Natural Cotton Tubular Stockinette, 3 Inch x 25 Yard, 1 Each TED Anti-Embolism Stockings Accepted by leading authorities as Surgical Headcovers Orange and black print Style:1 Pair (Left & Right) 7212234

AlbaHealth® Natural Cotton Tubular Stockinette, 3 Inch x 25 Yard, 1 Each TED Anti Embolism Stockings Accepted by leading authorities as Surgical Headcovers Orange and black print Style:1 Pair (Left & Right) 7212234 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 remarkably bright compared with red and green * Color plates encased in specially designed album type books for ease of handling * Detailed instructions included Packages are easy to peel open