Entropion is a medical condition in which the eyelid folds inward. It usually occurs in the lower eyelid, but it can affect either. The reverse is a condition called ectropion, in which the eyelid ...

Adults with facial nerve paresis (FNP) generally develop ectropion, but a recent report of children with syndromatic FNPs implies that entropion may be more common in this setting than ectropion.