We know it doesn't seem right to buy colour blind glasses that make the world so colourfully beautiful but won't also help you pass a simple colour blindness test. We hear this often and that makes sense since some have told us that they were devastated as a child the first time they "failed" the colour test. We understand your desire to pass the test now that you have your EnChroma glasses, but the Ishihara colour blind test is a screening tool designed for one purpose: to screen for all types and extents of colour blindness. It is not intended to be used for evaluating performance of colour-enhancing or colour-correcting filters. In fact, eye care professionals should know that wearing any tinted lens is not allowed when taking an Ishihara colour blindness test to assess colour blindness.