Why could one be colorblind?


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Are any of you color blind like me and want to know some possible reasons why you are? I would like to know so I did some research and found some reasons why I could be. Supposedly genes are not the only possible cause of color blindness but experiencing misfortunes as a child can be as well.

According to my research color blindness can come from other causes that are not gene-related. It can come from Shaken Baby Syndrome because being shaken as a baby can damage your brain and retina. Another potential causal variable could be traumas in general. This being because swelling can occur in the part of our brains that process our vision. Another potential causal variable could be UV damage; for example too much direct exposure to the sun. I did more research and WebMD states how causal injury to the eye can be for colorblindness. This isn't surprising because all of these possible causes involve injury to the eye. There are also other variables that are unlikely but possible, all which are diseases.

There then of course is the possibility that you ARE colorblind because of a gene that runs in your family. The possibility that genes are to blame is more likely for men than women. This being because gene mutation on the X chromosome is more common. Women have an unfair advantage though in terms of which sex can be harmed by colorblind genes. Males have one X chromosome, while females have two. If one of the females' is defective, the normal chromosome will protect them from becoming color blind. For us males if one is defected, we're just sad out of luck...

As we have learned in class I know that hypotheses ought to be tested to the fullest extent before we can begin to accept them as truth. Although this experiment makes sense to me I feel as though a lot more science would have to be done in order for legitimate scientists to believe that this is true. Experiments would have to somehow be done linking colorblind peoples' past experiences to their being colorblind. Colorblind people whose parents believed that they didn't damage their children would have to be compared to colorblind people whose parents had a full recollection of their child's childhood. This way they know if possible third variables like traumas come into play. Only these types of controlled experiments would get scientists to actually consider this hypothesis about color blindness; as for right now though these possible childhood experiences being related to colorblindness is only correlational.

Works Cited

1. "Causes"Colour-blindness. Web. 25 Oct. 2012.

2. "Eye Health Center"WebMD. 14 Apr. 2011. Web. 25 Oct. 2012.

1 Comment

After reading your blog I feel very lucky to be female and have a lower risk of suffering from colorblindness! Luckily, I am not colorblind. I have wondered, though, is the color that I associate as red, for example, the same color as others associate with as red? We all know what red means, like at a stoplight red means stop, green means goes. I have no doubt that this is universally known, but what if what I see as red in my eyes is someones else's green? The meaning is the same, this is why stoplights work and we don't have an accident every time we're at one, but what if the color itself that I am seeing is different from the color the person in car behind me is seeing? Does this make sense at all...

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