| Ishihara Test Book ( Colour , Color Blindness ) - The designs and shapes enable simplified testing of children and those with cognitive conditions where identification of numbers may not be possible. |
| Unlike the Ishihara patterns that may be found online and viewed over a computer monitor, this color vision test is designed to produce accurate test results in determining color blindness and the degree of color blindness. |
| Since color / colour reproduction may vary from computer monitor-to-computer monitor, the best and most accurate method of testing for color blindness still comes from official Ishihara album-type books. |
| Best to test colour blidness even at home. ( Ishihara Test Book Color / Colour Blindness ). |
