Relation between vertical facial asymmetry and postural changes of the spine and ancillary muscles.

Some patients presenting with head tilt maintain binocular vision by the adaptation of the spinal position. It is suggested that in cases of hyper eye facial asymmetry, where one eye is positioned higher than the other, the head will tilt to equalize the ocular heights in order to maintain binocularity during concentrated visual tasks. This phenomenon is a subdivision of ocular torticollis. The continuous head tilt causes adaptations by the spine and its ancillary muscles. Early treatment by small vertical prisms can alleviate stress discomfort and prevent it in the future.