Abstract
Three patients with ‘ping-pong’ gaze (PPG) are described. The authors propose to reserve this term for those forms of periodic alternating gaze without a silent period. Review of the literature and the present cases indicate that the only constant clinical implication of PPG is the integrity, at least in part, of the lower brainstem. PPG has no prognostic value. It is suggested that PPG occurs more frequently than is thought.