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Jay and Maureen Neitz explain it on their website as follows: Before the treatment the monkeys had only two perception patterns which could differentiate hues, S supported by M and M supported by S. The insertion of the third opsin gene gave rise
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Color blind is just another Politically Correct feel good BS term. You can't be blind to part of who you are or the Heritage and Culture your racial background represents. Multiculturalism is all about race and color and the importance of it all.
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Actually I really don’t know. But I fear that most of the time they only have some Ishihara plates to test colorblind persons. For proper testing you also would need some other tests like an University test for blue-yellow color blindness and of
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Dogs aren't colorblind, but they do see colors differently than we do. Dogs don't seem to be able to see reds and greens very well, so their world probably seems to be in shades of yellow and blue. For a comparison of how you and a dog see colors,
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In this case you can compare it with near- or farsightedness. Some people have it, some not. Most people get farsighted when they get older but most important of all, it never causes pain. This is just what and how you can see, but it can never be
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Most color vision problems are inherited (genetic) and are present at birth. Other color vision problems are caused by aging, disease, injury to the eye (acquired color vision problems), optic nerve problems, or side effects of some medicines.
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