Well, generally speaking, first, we have to talk about the causes of color blindness. As we know that the causes of color blindness can be the improper work or absence of one of three cones in our eyes, which are responsible for distinguishing colors. While, in daily life, some kind of eye problem, such as injury of the eye, aging or as a side effect of using certain medications or drugs can also lead to color blindness. And the aging can be the heaviest risk of getting color blindness. So just be careful about it. Of course, Color blindness can be a genetically inherited condition. And it usually occurs due to the genetics, and is passed from one generation to another.
Well, as a matter of fact, I quite understand your anxiety over having colorblindness. So, as far as I know, some colorblindness cases are inborn, on the other hand, some people would develop colorblindness in their lifetime. Anyway, if you do not have inborn colorblindness , and if your visual nervous system is impaired of ill, you are very likely to be colorblind.
As we see, lots of people with color blindness are born to be. However, some occasions will cause the color blindness, too. For example, some people get the color blindness because of the car accident which damages his brain to some degree. We can see because the retina eyesight has different structure of the material which can cope with the different wave length which can generate different information. If there is the defect, we may have color blindness. There are many kinds of color blindness. Some people only see the white and black color in this world. That is the most color blindness at risk. However, some people with red and green color blindness will not be able to see some kinds of colors. They are luckier to some degree than those people with black and white color blindness.
Color blindness has long been known to affect boys more than girls. Now, in the first major study on children and color blindness, researchers found that race and ethnicity also figure into one's risk for developing the disorder.Girls were much less likely to have the condition. Across all racial and ethnic groups, no more than half of one percent of girls in the study were color blind.