How can I cheat on tracing plates of ishihara test?

Dude we don't sell this kind of product.

Look through any red lens- even a bike reflector, a piece of red cellophane, or the cheapest pair of magenta lenses on Amazon: a pink/red lens introduces brightness cues by making the greens look relatively darker and reds look brighter. Even in dichromats. Its not some amazing technology. I don't know why anyone would buy any kind of "colorblindness" lens based on this technology for more than $15.

EnChroma relies on its filter achieving a more like normal balance between red and green cone activity in anomalous trichromats, and very explicitly does not work at all, even a little bit, for dichromats.

/r/ColorBlind Thread Parent