4 ms·
If the dotted image has a mixture of different hues and brightnesses, your brain only sees noise, while a color blind person doesn't see the different hues. The
by lopis 4y ago
If the dotted image has a mixture of different hues and brightnesses, your brain only sees noise, while a color blind person doesn't see the different hues. The number is shaped only in brightnesses arrangement.
However, I've been told my color blind friends that they don't work so well depending on your type.
- lb1lf 4y agoFor years, I had a poster which looked like your average Ishihara test in my office - an assortment of random dots. If you had normal colour vision, that is. If you were the right kind of deficient, though, it read 'Color vision? We don't need color vision where we are going!'