Take what this YouTuber has to say with a grain of salt. I will admit that I haven't researched and confirmed his claims, though I have watched all of the videos I'm posting today. I can say that they confirm something I've long been skeptical of: it seems unlikely that glorified sunglasses could produce colors in the eyes/brains of people who genetically can't see (or maybe can't differentiate) colors.
The enchroma glasses (and other, similar brands) seem to block a narrow band of colors leading to a greater differentiation between green and red meaning 'color blind' people can distinguish those colors more easily and can pass various 'color blind' tests like the classic numbers inside a circle. What the glasses seem incapable of, however, is actually letting those people see different colors that they inherently cannot see.
The science behind 'color blindness' is well explained here as is the science of what the glasses actually can do. The videos also explore common issues with scientific research - both conflicts of interest and confirmation biases as well as social pressure leading people to report results that may or may not actually be there.
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