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Prosopometamorphopsia. Prosopometamorphopsia (sometimes known as " demon-face syndrome " [ 1][ 2]) is a visual disorder characterized by altered perceptions of faces. In the perception of a person with the disorder, facial features are distorted in a variety of ways including drooping, swelling, discoloration, and shifts of position.
Specialty. Ophthalmology. Dichromacy (from Greek di, meaning "two" and chromo, meaning "color") is the state of having two types of functioning photoreceptors, called cone cells, in the eyes. Organisms with dichromacy are called dichromats. Dichromats require only two primary colors to be able to represent their visible gamut.
Carotenosis is a benign and reversible medical condition where an excess of dietary carotenoids results in orange discoloration of the outermost skin layer. The discoloration is most easily observed in light-skinned people and may be mistaken for jaundice. [ 1][ 2]: 540 [ 3]: 681 Carotenoids are lipid-soluble compounds that include alpha- and ...
Why Dogs Like Watching TV. If you're a Gen X-er, you might have been told as a kid that dogs are color blind, but recent studies show that dogs can see two primary colors, tones of blues and ...
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Prosopagnosia (from Greek prósōpon, meaning "face", and agnōsía, meaning "non-knowledge"), [2] also known as face blindness, [3] is a cognitive disorder of face perception in which the ability to recognize familiar faces, including one's own face (self-recognition), is impaired, while other aspects of visual processing (e.g. object discrimination) and intellectual functioning (e.g ...
View the original article to see embedded media. For Twiglet the mini-Dachshund, a bit of garden digging is not only allowed, it’s actually encouraged. And that’s because the area where he’s ...
Evolution of color vision in primates. Baboons, like other old world monkeys and apes, have eyes which can discern blue, green and red wavelengths of light. The evolution of color vision in primates is highly unusual compared to most eutherian mammals. A remote vertebrate ancestor of primates possessed tetrachromacy, [ 1] but nocturnal, warm ...