Long-term follow-up of benign positional vertical opsoclonus in infants: retrospective cohort.

Background/aims: Benign positional vertical opsoclonus in infants, also described as paroxysmal tonic downgaze, is an unsettling phenomenon that leads to extensive work-up, although benign course has been reported in sporadic cases. We describe long-term follow-up of a series of infants with the phenomenon.

Methods: This retrospective cohort included all infants diagnosed with rapid downgaze eye movement in 2012-2015 and followed until 2016.