So what happens when autism occurs in someone who is also color deficient? A lot of people who get diagnosed have color related sensitivities, like refusal to eat certain foods of a certain color.
Information on color vision deficiency
You may have heard of people not knowing they were "colorblind"until they failed a really sensitive color distinction test, such as the famous Ishihara test. The reason they did not know is because they did not have prior real world problems identifying colour. These are people with what you might have heard of as a milder form of colorblindness but is actually weakness to a color rather than a blindness, such as to green - deuteranomaly.
Those with deuteranomaly often still make a clear distinction between colours like red, yellow, green, blue, orange and purple but not (at least on objects that reflect light) between dark green and black. So if someone on the spectrum is green weak and refuses to eat black food, he will probably also refuse to eat dark green food.
Protanomaly, a weakness to red, is similar, but in this case, the ability to see red is reduced, they may still make a clear distinction between, say, orange, yellow, green and blue but not only does dark red look black but their ability to see red lights is also greatly reduced.
It has been found that those with a weakness to green are actually better at discerning shades of khaki, could protanomaly have the same advantage?
For some reason, tritanomaly, a weakness to blue, causes certain shades of green to look gray. So if someone on the spectrum, also with that colorweakness, refuses to eat gray food, they would also refuse to eat green foods that look gray to them.
Information on color vision deficiency
You may have heard of people not knowing they were "colorblind"until they failed a really sensitive color distinction test, such as the famous Ishihara test. The reason they did not know is because they did not have prior real world problems identifying colour. These are people with what you might have heard of as a milder form of colorblindness but is actually weakness to a color rather than a blindness, such as to green - deuteranomaly.
Those with deuteranomaly often still make a clear distinction between colours like red, yellow, green, blue, orange and purple but not (at least on objects that reflect light) between dark green and black. So if someone on the spectrum is green weak and refuses to eat black food, he will probably also refuse to eat dark green food.
Protanomaly, a weakness to red, is similar, but in this case, the ability to see red is reduced, they may still make a clear distinction between, say, orange, yellow, green and blue but not only does dark red look black but their ability to see red lights is also greatly reduced.
It has been found that those with a weakness to green are actually better at discerning shades of khaki, could protanomaly have the same advantage?
For some reason, tritanomaly, a weakness to blue, causes certain shades of green to look gray. So if someone on the spectrum, also with that colorweakness, refuses to eat gray food, they would also refuse to eat green foods that look gray to them.
