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I watched a youtube video where a color blind guy in his 50s was given a pair of EnChroma glasses for color blindness, put them on, and had a strong emotional reaction, like a deaf person hearing for the first time.

Then I read the wikipedia article (https://en.wikipedia.org/wiki/EnChroma) that says "they do not restore normal color vision, and claims in excess of this by the manufacturer have been characterized as marketing hype ... They are simply a very expensive pair of hunting glasses ... How could they possibly work? The answer is that they can't."

I liked the video and now my feed has dozens of similar ones with similar strong reactions. If they don't work why the reactions? Am I missing the videos where they just say "meh"? Is it a placebo effect or maybe they're just playing it up for the gift givers? I guess the test is whether they continue to wear the glasses for long.



Im red green colorblind and have enchroma glasses. They work by reducing the other colors to balance with the reduced colors.

There are lots of reddish brown things that are actually red. I wear mine daily, but if I didnt, I wouldnt miss them.

With the glasses on I can see subtle red tints that I cant normally notice. For whatever reason it doesnt help much with green.


You might want to spend a few more minutes on finding out what those actually do. Yes, of course they don't restore normal colour vision. They can't possibly work iff that's the goal.

Look at the frequency responses of cone cells in a human with normal colour vision: https://en.wikipedia.org/wiki/Color_vision#/media/File:Cone-...

Those already have a very high overlap. A lot of people with red-green colour blindness still have those two types of cones working quite well individually, but the overlap is even more extreme. What these glasses do is filter out photons that fall in these overlapping regions. This amplifies the difference in responses from different cone cells.

I don't know about what marketing claims were made by that particular company. Maybe some were plain wrong; maybe they were correct but overhyped with a tendency to mislead. Maybe some of those YT videos aren't as ‘organic’ as they seem, but dramatic reenactments incentivised by some PR douche handing out free samples. All I know is that it's not implausible that someone is happy because they can finally tell grey from purple for the first time. I'd encourage interested consumers to check out other brands first, but no idea if those even exist in the consumer eyewear market. Maybe Enchroma are sitting on a patent? Anyway, try before you buy.

By the way, I would have been surprised if that Wikipedia article actually said ‘they can't possibly work‘. That's not the case — it contains a quote with that claim. It's cool to shorten a quotation to just the relevant parts, but please try to not invent ‘alternative facts‘ in the process.

> like a deaf person hearing for the first time

Yeah, definitely not. Once upon a time, my headphones and earphones failed simultaneously and I spent a couple of weeks listening to podcasts through busted earbuds, in shit quality, mostly one ear at a time. Then I got proper IEMs and finally could hear music again. In stereo. Experience all the instruments. That felt quite good. I guess it's more like that. Except it would be for the first time ever. I can see how that would prompt an emotional response.


I tried contact lenses for colour blindness as a kid (No idea if they were made by EnChroma).

They made everything seem so much brighter and more colourful, like someone dialed the saturation notch right up.

I didn't like it. Everything was so colourful it felt like it was giving me a headache. I guess I could probably have gotten used to it if I'd kept with it, but I just didn't believe it would make me able to recognise colours correctly - I mean, surely my brain was already pretty much hard-wired to comprehend course a certain way? And I remember they were expensive, and our family wasn't exactly well off, so I declined.

Anyway, as a middle-aged man now, I don't feel like it's been significantly detrimental to my life. For the occasions I need it, I use apps to check the RGB values of things, and I can roughly figure out colours, but in general, yes, it's an impairment, but just doesn't feel like it's a big deal.


A former colleague of mine who was also red/green colourblind had a pair of these and I borrowed them for the weekend. I was pretty underwhelmed to be honest, couldn’t see much difference. Maybe they work better for certain types of colourblindness.




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