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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 A cold-adaptive explanation for the epicanthic fold is today seen as outdated by some, as epicanthic folds appear in some African ...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...
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).
With age, the bridge will narrow, and the epicanthic folds in the corner of the eyes will go away. This will cause the eyes to appear wider and thus not have the appearance of strabismus. To detect the difference between strabismus and pseudostrabismus, clinicians use a flashlight to shine into the child's eyes.
Girl with epicanthal folds A diagram showing a complete cleft lip and palate. Unevenly positioned eyes that may be crossed or wide-set (hypertelorism) [5] Vision problems due to abnormal facial anatomy, which causes mechanical disturbances of the extraocular muscles, resulting in strabismus (crossed eyes) [3]