Editor,—Reverse ocular bobbing is an abnormal spontaneous eye movement in which the eyes move rapidly and conjugately upwards (fast phase), followed by a slow drift (slow phase) back to the primary position (that is, the reverse of ocular bobbing—fast conjugate downwards deviation, with a slow return up to the midline). This eye movement disorder may be seen in patients with viral encephalitis, metabolic encephalopathy, and in those with pontine lesions.1 Converse ocular bobbing (also referred to as reverse ocular dipping or slow upward ocular bobbing), consists of a slow phase upwards, followed by a fast phase back to the primary position, and has also been reported in patients with viral or metabolic encephalopathy, and in those with pontine infarction.1 Opsoclonus, also referred to as “saccadomania” or “dancing eyes”, is characterised by intermittent bursts of large amplitude high velocity multidirectional back to back saccades, and has also been reported in patients with viral encephalitis and metabolic encephalopathy, as well as in …