Ocular manifestations of deformational frontal plagiocephaly.

Frontal plagiocephaly can be caused by two mechanisms: craniosynostosis and external deformational pressure. Synostotic plagiocephaly is known to be associated with vertical strabismus and contralateral head tilt. Thirteen patients with deformational frontal plagiocephaly were examined to evaluate head position, ocular motility, and alignment. Nine of the patients (70%) were found to have ipsilateral torticollis, but only one patient had strabismus and this was a horizontal deviation not obviously associated with head position. The clinical features of synostotic and deformational plagiocephaly are discussed to distinguish the two conditions, which have a different treatment and outcome.