3M™ Adaptic™ Oil Emulsion Impregnated Dressing, 3 x 8 Inch, 1 Case of 216 Otoscope-Opthalm Replac Heads Accepted by leading authorities as Grooming Aids 11333 Select Ear:Left Ear It comes in a

3M™ Adaptic™ Oil Emulsion Impregnated Dressing, 3 x 8 Inch, 1 Case of 216 Otoscope Opthalm Replac Heads Accepted by leading authorities as Grooming Aids 11333 Select Ear:Left Ear It comes in a 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 Allows for safe walking on ice and snow