Why some people can t tell the difference between green and blue?

1. There are many kinds of color blindness, some are full color blindness, some are red and green, some are blue and green, and some are completely blind. Among them, blue-green blindness is not a big problem in life, but as you said, the difference between blue and green is not clear. Sometimes he doesn't even notice it.

2.Since childhood, maybe since he was a child, for example, his grandmother and grandfather were blue-green blind, and he told him that the green is blue and the blue is green, and there are many such cases.

**, that is, when I was a child, I recognized green as blue and blue as green, and I couldn't react at first.

Maybe it's color blindness, or color weakness, or you just don't know what green and blue colors are.

There is no clear boundary between blue and green, because it can be from blue to blue-green to green, so people often can't tell the difference, because what you see is not pure blue or pure green, but mixed colors, when you look at the color, think back to the color of pure blue or pure green, and then compare which one is closer.

They are weak.

Panchromatic weakness, also known as red-green-blue-yellow weakness. The degree of color vision impairment is lower than that of total color blindness, and there are no abnormalities in visual acuity or other complications of total color blindness. When the color of the object is dark and distinct, it can be distinguished; If the color is light but not saturated, it is difficult to distinguish. Patients are also rare.

Some of the colors are weak. There are weak red (weak first color), weak green (weak second color) and weak blue-yellow (weak third color), among which weak red and green are more common, patients have poor sensitivity to red and green, and their color discrimination ability is close to red-green blindness when lighting is poor; However, when the color of the substance is deep, vivid and the illumination is good, its color discrimination ability is close to normal.

People with color blindness (weak) are born without the ability to distinguish colors correctly, and think that others are the same as themselves, so they cannot be consciously sick, and many patients with color blindness have no abnormal findings on eye examination. When red and green colors are particularly prominent or singular, patients often distinguish them by unique experience, so color blindness (weakness) can only be determined by specialized color vision testing.

Because the older generation, we all know that the New China has been 49 years old, and it hasn't been 100 years now, and they haven't had much formal education, especially in these natural disciplines.

But in our lives, green and blue, we have a lot more opportunities to get close to blue, especially the older generation is not very open-minded, like clothes and pants, a lot of blue, just think about it, they still have more blue feelings.

And there are many songs, like the blue sky, and the blue water, and the nature. The close relatives of green and blue are very separate.

Blue and green are pretty much the same on their own

It may also be that parents have taught the wrong ones since childhood

Like, this often happens.