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Color blind6/6/2023 ![]() There are different subtypes of monochromacy that are affected by different rod and cone cells taking on abnormal shapes or not being present at all. In other forms of color deficiencies, one perceives colors differently but can still perceive colors as… well, colors! In monochromacy, the rods and cones in your retina have some form of defect. Scientifically known as monochromacy, complete color blindness is much rarer than the two categories above. Tritanopia – which makes it difficult to tell the difference between certain combinations of colors like blue/green, purple/red, and yellow/pink. Tritanomaly – which makes blue and green hard to differentiate along with red and yellow. With blue-yellow color blindness, there’s: Protanopia and Deuteranopia – both make you unable to tell any difference between red and green altogether. Protanomaly – the opposite of deuteranomaly, protanomaly makes red look more green and less bright. These three different types may seem self-explanatory as to what colors someone may be “blind” to or confuse, but within two of these groups, there are several specific color deficiencies.ĭeuteranomaly – the most common type of red-green color blindness where greens will have a more red shade. There are a few different types of color deficiency that can be separated into three different categories: red-green color blindness, blue-yellow color blindness, and the much more rare complete color blindness. It’s often inherited genetically through the mother but has been known to develop over time with age or diseases like diabetes and multiple sclerosis (MS). It affects 1 in 12 men throughout their life and is much rarer in women, where only 1 in 200 will have some kind of color deficiency. These color deficiencies don’t have anything to do with how sharp our vision is or how much light we see, but it does mean the cone cells process colors differently. While relatively uncommon, most are at least familiar with the term “color blindness”. ![]() But for approximately 300 million people across the globe, colors aren’t as they seem. Humans generally have three types of cone cells that are able to discern different colors and shades. Rod cells are sensitive to different levels of light, while cone cells are more sensitive to differing colors. ![]() Our brain does the heavy lifting in recognizing that specific signals from specific reflections are a certain type of color. The retina is lined with millions of cells known as rods and cones that take the colors reflected off of objects as light-sensitive signals and relay those signals to our brains via the optic nerve and pathway. We perceive color as it hits the back of the retina. Turn off the lights and your red stapler becomes a dark gray color. That red stapler on your desk is only red because that is what is reflected when light hits it. Instead, objects absorb light and reflect specific colors that we then see. When you look around at everything around you, the colors you perceive aren’t inherent to the objects you see. Your eyes are little globes of technicolor wonder.
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