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An epicanthic fold or epicanthus [6] is a skin fold of the upper eyelid that covers the inner corner (medial canthus) of the eye. [3] However, variation occurs in the nature of this feature and the possession of "partial epicanthic folds" or "slight epicanthic folds" is noted in the relevant literature.
Although an epicanthic fold can also be associated with a less prominent upper eyelid crease (a feature commonly termed "single eyelids" as opposed to "double eyelids"), the two features are distinct; a person may have both epicanthal folds and an upper eyelid crease, one and not the other, or neither. [2]
An epicanthic fold, the skin fold of the upper eyelid covering the inner corner (medial canthus) of the eye, may be present based on various factors, including ancestry, age, and certain medical conditions. In some populations the trait is almost universal, specifically in East Asians and Southeast Asians, where a majority, up to 90% in some ...
Epicanthic eye folds are believed to be an adaptation protecting the eye from overexposure to ultraviolet radiation, and is presumed to be a particular trait in archaic humans from eastern and southeast Asia. A cold-adaptive explanation for the epicanthic fold is today seen as outdated by some, as epicanthic folds appear in some African ...
Well single/double eyelids have little to do with epicanthic folds besides that in order to have a single eyelid an epicanthic fold must be present but double eyelids appear in eyes both with and without an epicanthic fold. Regardless, an epicanthic fold is something separate from an eyelid crease...
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Retrieved from "https://en.wikipedia.org/w/index.php?title=Epicanthal_fold&oldid=711618042"This page was last edited on 23 March 2016, at 22:29 (UTC). (UTC).
Crease of the upper eyelid – having either a "single" or "double" eyelid Epicanthic fold; Lateral arcuate ligament; Horseshoe kidney - also known as ren arcuatus ...