elevation of a congenitally ptotic eyelid when the mouth is opened, giving the appearance of constant winking.
an involuntary facial movement phenomenon in which the eyelid droops, usually on one side of the face, when the jaw is closed but rises when the jaw is opened or when the jaw is moved from side to side. The raising of the eyelid often appears exaggerated. Also called Gunn's syndrome, Marcus Gunn's syndrome. See also Marin Amat's syndrome.