What ‘chew’ looking at? My eyelid moves when I eat

Marcus Gunn Jaw Winking Syndrome Congenital cranial dysinnervation disorders (CCDD) and individuals with this syndrome have variable degrees of blepharoptosis in the resting, primary position. It is associated with synkinetic movements of the upper eyelid during masticating movements of the jaw. In Marcus Gunn jaw-winking syndrome (MGJWS), there occurs a coordinated synkinetic movement of the upper eyelid and the jaw as a result of an abnormal connection between the motor branches of the trigemi