Color blindness is usually caused by inherited or trauma. It may be blindness after a traffic accident. The book of homochromy test could tell the differences between them. Colour blindness affects your ability to discrimination of colors, usually red and green. Trauma would lead to staining when seeing. You can not lose your Visual acuity strong when you have color blindness, you see just different with others. By example, normal are red, you feel like a different color, which dimmer more. This will lead to traffic accidents when you could differentiate light sometimes yellow red or green. It is dangerous. In some countries, people with color blindness were not allowed to drive.
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