opsoclonus
Rapid, uncontrolled eye movement
uncountable
The syndrome manifests itself as opsoclonus, myoclonic jerks, ataxia, and/or encephalopathy.
Where it comes from
From Ancient Greek ὄψ (óps, “eye”) + clonus.
Adapted from the Wiktionary entry opsoclonus (CC BY-SA 4.0).