Ocular motor apraxia following cardiac surgery.

Ocular motor apraxia is characterized by a deficiency in the generation of voluntary saccadic eye movements despite the presence of spontaneous saccades. We report two cases of isolated ocular motor apraxia, both in children, that developed following cardiac surgery. Electro-oculography was done in one case and showed slow saccades and decreased pursuit gain. The authors review the neuroanatomic and neurophysiologic features relevant to supranuclear gaze mechanisms.