lpetrich
Contributor
Exposing the Color Blind Glasses Scam - YouTube
The glasses themselves have a strong magenta fiilter, so all they do is make the world look more strongly colored. So that's how they seems to work.
Also, for a colored-balloon test, the balloons are marked with names of colors.
I was very suspicious when I learned of this, because color-vision deficiency is vision with only one or two types of functioning retina cone cell instead of the normal three: monochromacy or dichromacy instead of normal trichromacy. There is no way that glasses can restore the missing information -- one would have to restore the missing cones, their nerve connections to the brain, and the appropriate visual processing in the brain.
So the only way that glasses would work is if one could change what colors that they filter. For instance, the most common kinds of color blindness are red-green kinds, where both colors look like yellow. So one could use glasses that can adjust their filtering of red light and green light, so that red objects look alternately bright and dark yellow, and green objects alternately dark and bright yellow, with yellow objects being unchanged.
The glasses themselves have a strong magenta fiilter, so all they do is make the world look more strongly colored. So that's how they seems to work.
Also, for a colored-balloon test, the balloons are marked with names of colors.
I was very suspicious when I learned of this, because color-vision deficiency is vision with only one or two types of functioning retina cone cell instead of the normal three: monochromacy or dichromacy instead of normal trichromacy. There is no way that glasses can restore the missing information -- one would have to restore the missing cones, their nerve connections to the brain, and the appropriate visual processing in the brain.
So the only way that glasses would work is if one could change what colors that they filter. For instance, the most common kinds of color blindness are red-green kinds, where both colors look like yellow. So one could use glasses that can adjust their filtering of red light and green light, so that red objects look alternately bright and dark yellow, and green objects alternately dark and bright yellow, with yellow objects being unchanged.
- Color-Blindness Simulators - what I myself wrote
- Online Color Blindness Simulator | DaltonLens - several algorithms
- Online Color Blindness Simulator | DaltonLens - simplified
- Coblis — Color Blindness Simulator – Colblindor
- Color Blind Vision Simulator | Color Blind Glasses Simulator