My husband and I went to an exhibition about the solar system at our local natural history museum. There was also an exhibition for children about the human body with really good explanations how genes work, how our ear works, stuff like that.
We came to the part about the eyes and there was an explanation of colorblindness and the different forms together with the tests. You know - the circles with dots where you have to read the number. Anyway, I forgot why but he started reading out the numbers. And well, he got one of them wrong. Not the test for full-on red-green blindness, but he can’t tell certain shades apart.
In hindsight I had noticed that he sometimes confuses names for colors apart from the basic ones or that he doesn’t like it when I identify an object by its color (e.g. “give me the pink one”). But I’d always chalked it up to German not being his mother language.
Ishihara tests.
I took an online test back in the day and had some unexpected results.
Seriously though - in modern times, it is bizarre anyone goes undiagnosed. 20th century, sure, it only really mattered if you tried being a pilot. But it’s like 10% of all men, globally, and the tests are literally “if you can read this, you’re normal” and “if you can read this, take a pamphlet.”
Thanks, I didn’t know they had a name other than “colorblindness test” :D
1% of females as well, but few know that even though there must be a lot out there.
women are also likely to have 4 cones instead of the usual 3 for color, so thier color perception is enhanced though its not common. rarer they could have 5. birds have 4 and superior color perception than humans, besides thier visual acuity. and some animals even better.