The epicanthus shows two varieties. The inner (medial) epicanthus is characterised by a fold covering the inner angle of the eye and the lacrimal gland. However, the upper and lower eyelids are not affected (like in e.g. the Mongolian fold). The lateral epicanthus behaves similarly at the outer edge of the eye. The epicanthus is often confused with the Mongolian fold. One reason may be that both folds often appear in combination. In this case the eye folds can cover a large portion of the eye. The epicanthic fold seems to appear often in individuals with mixed Mongoloid and non-Mongoloid ancestry, or is found in early childhood as a predecessor of the Mongolian fold.