Epicanthus is a medical term typically used to describe an eye condition where a fold of skin covers the inner corner of the eye. There are a few synonyms for the word "epicanthus" that are often used interchangeably including, epicanthal fold, Mongolian fold, and palpebral folds. The term epicanthal fold is derived from the Greek words "epi" meaning upon, and "kanthalos" referring to the corner of the eye. The term Mongolian fold was originally used to describe this eye condition in people of Mongolian descent but is now recognized as a common feature in individuals of various ethnic backgrounds. Finally, the term palpebral folds refers to the skin folds on the eyelids that may partially or completely cover the inner corner of the eye.