One and Half Syndrome; Paralytic Pontine Exotropia
This involves both gaze palsy secondary to a lesion of the ipsilateral PPRF or VI nucleus, and an INO secondary to a lesion of the MLF on the same side. If the VI nucleus is involved, VII palsy almost always occurs due to the proximity of the VII fascicle to the VI nucleus.
Robert B. Daroff, MD, Professor of Neurology, School of Medicine, CASE Western Reserve University, University Hospitals - Case Medical Center
Spencer S. Eccles Health Sciences Library, University of Utah