Fuckin' Ishihara
I have trouble explaining red-green colourblindness to people so I usually results to showing them the Ishihara colourblindness tests with the bubbly numbers in the circles. I've found that real world examples are the best way to get the point across. Here's a list of things that pop up when you're red-green colourblind.
- The Canadian $5 and $10 bills look like they're the same colour, apparently they're blue and violet respectively
- Clothes that I think match, certain shades of red especially, don't...
- The particular shade of green and yellow used for some electronics (notable the Nintendo Wii) are indiscernible to me
- Laser pointers just don't show up on projector screens, especially green