Below you may see the example how one that is colorblind can’t distinguish the numbers on the card. Because of Dalton’s work, the condition is sometimes called daltonism, although this term is now used for a specific type of color blindness, called deuteranopia. It is most often of genetic nature, but may also occur because of the eye, nerve, or brain damage, or due to exposure to certain chemicals.īefore we proceed onto our next example, here is a little history lesson: The English chemist John Dalton published the first scientific paper on the subject in 1798, “Extraordinary facts relating to the vision of colors” after the realization of his own color blindness. As we already stated, color blindness, or color vision deficiency, is the inability to perceive differences between some of the colors that others can distinguish. The boy’s goal was to be a pilot, so when he is made aware that he’s colorblind, the poor kid has a small nervous breakdown. He is not able to see the numbers, or tell the different colors apart well enough to distinguish the numbers. If the numbers don’t jump out at you immediately, if you have hard time distinguishing the colors apart, or if you aren’t able to easily distinguish at least a vague guess as to what the number is, then you my friend are unfortunately – color blind.Ī version of this test can be seen used in the film Little Miss Sunshine, in which a small girl is playing with the vision test chart with her brother. Attached on your left, and below you may find some examples of color blindness test used for testing if person is partially of fully color blind. Do they remind you of anything? If you have a driving license, or attended a medical exam at some point in your life, there is a big chance you encountered these during the process. These images might seem familiar to you look closely. Sometimes, optical illusions can serve a purpose.
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