What exactly is colour-blindness and how do you find out if you have it?

到底什么是色盲症，你又是怎么发现自己有色盲症的？

《柯林斯英汉双解大词典》

Some characteristics are inherited this way (more or less), and they tend to be the ones that textbooks focus on: for example eye colour, colour-blindness, Huntington's disease.

一些特性是按这种方式遗传(或多或少)，并且他们成为了课本的焦点：举个例子，眼睛的颜色、色盲、亨廷顿氏舞蹈病。

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Genetic damage to cone cells, which causes colour blindness, is the most common type of gene disorder seen in humans.

锥体细胞的遗传缺陷导致了色盲，这是人类最常见的一种基因疾病。

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Blue and yellow tones work effectively but not red or green because of canine colour-blindness.

BBC: New TV channel for dogs sets tails wagging in Israel

The great merit of his approach is its consistency: in both cases, he has put the principle of colour-blindness first.

ECONOMIST: Lexington: The colour of conservatism | The