I saw another enchroma glasses video and wondered, if the person has always had “faulty” eyes that give wrong colours and smaller range of colours to brain to process, where does the error come in? If it’s the light receptors, how would glasses change those receptors ability to somehow now give correct colour for brain to understand.
And also how can brain understand those new colours immediately? I guess it must be hard coded to DNA and brain has developed correctly with that ability even if eyes can’t provide correct signals to match with colour data in brain.
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So, there are multiple kinds of color blindness. The kind of color blindness that Enchroma glasses help with is called anomalous trichomacy.
With that kind of color blindness, colors of light that the red cones are sensitive to overlap too much with the colors of light that the green cones are sensitive to. This means that when you see something red or green, both cones activate and it’s hard to tell if it’s actually red or green.
The glasses are what’s called a notch filter. Basically, they filter out a small “notch” of color that is right in the middle of where the red and green cones overlap. This makes it easier to distinguish between red and green because the red cones don’t activate for green as much and vice versa.
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