
As many of you know, both of my brothers, Allen and Jacob are colorblind (as was my grandpa). As a result, I have always been curious about this condition and have tried to learn about it during my biology classes in school. Why was it hard for my brother to drive when we went to New Mexico on vacation, and the traffic lights were turned on their sides? I often asked my brothers how things looked to them etc, but I never really got satisfactory answers from them until just recently. Jacob found a website that, to him, described perfectly what colorblindness was from a colorblind persons point of view... something he'd previously been at a loss to describe since he had never experienced seeing the world like a non-colorblind person. He shared this website with me, and it is great! It describes how colorblindness comes about and also provides color vision tests and examples of what a scene would look like to someone who is colorblind. I totally soaked it up. Here is an excerpt describing Protanomaly colorblindness (the type that Jacob has) from the website, http://colorvisiontesting.com/:
Protanomaly is referred to as "red-weakness", an apt description of this form of color deficiency. Any redness seen in a color by a normal observer is seen more weakly by the protanomalous viewer, both in terms of its "coloring power" (saturation, or depth of color) and its brightness. Red, orange, yellow, and yellow-green appear somewhat shifted in hue ("hue" is just another word for "color") towards green, and all appear paler than they do to the normal observer. The redness component that a normal observer sees in a violet or lavender color is so weakened for the protanomalous observer that he may fail to detect it, and therefore sees only the blue component. Hence, to him the color that normals call "violet" may look only like another shade of blue.
Under poor viewing conditions, such as when driving in dazzling sunlight or in rainy or foggy weather, it is easily possible for protanomalous individuals to mistake a blinking red traffic light from a blinking yellow or amber one, or to fail to distinguish a green traffic light from the various "white" lights in store fronts, signs, and street lights that line our streets.
Anyway, I loved learning more about how my brothers see things, and it really made me appreciate the colors I can see. I actually felt sad when I looked at the example pictures of the hot air balloons and Jacob told me that they both looked the same to him. All is not lost, though. Because of this deficiency, they are better at recognizing patterns, textures, and shapes and they use this to help identify things. Most of the time, colorblindness does not affect their lives. On a more random note, I recently learned that scientists believe that some beetles see many more colors than we can see. So, apparently, we are all a little bit colorblind.





































