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To see like a tetrachromat? There isn't one. These glasses only work for anomalous trichromacy. Those with just two working types of cone cells (dichromacy) will have to wait for gene therapy. Fortunately, anomalous trichromacy is the most common kind of color blindness.

While it wouldn't be as visceral as these glasses, you could mimic arbitrarily fine-grained color perception with a tunable bandpass filter. Set the band to 20nm and scan it through the visual range (400nm-750nm) quickly enough... you'd see some interesting artifacts. You'd also get a better feel for the emittance/reflectance curves of various dyes, plants, and lighting technologies. For example: OLED displays only emit light in a few narrow frequency ranges, so they would "flash" three times for every scan through the visual band. Blue flash, green flash, red flash. Repeat. Anything in sunlight or incandescent illumination would have much more continuous dimming and brightening.

While it sounds cool, I don't know of any device that can do this.




>To see like a tetrachromat?

Yes this is exactly what I was thinking.

Your narrow bandpass scanning idea sounds cool. Even if it was slow it would be interesting to look at something and watch it change over time - if you have three separated bandpasses then you should get something like colour vision, but where the colour of an object changed over time.




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