Definition of nystagmus in English:



mass noun
  • Rapid involuntary movements of the eyes.

    • ‘Firstly, patients who develop significant symptoms with testing but do not develop nystagmus do not have benign paroxysmal positional vertigo.’
    • ‘Doses should be withheld for nystagmus, sedation, ataxia, or dysarthria.’
    • ‘He had complete ptosis, limitation of eye movements in all directions, and nystagmus on lateral gaze.’
    • ‘Patients often have nystagmus, ataxia, and in severe poisonings, cerebral edema.’
    • ‘Common symptoms include weakness or numbness of a limb, monocular visual loss, diplopia, vertigo, facial weakness or numbness, sphincter disturbances, ataxia, and nystagmus.’
    • ‘Albinos regularly turn their heads to the side and roll their eyes in a circular motion in an attempt to find a favourable axis of sight; they suffer from rapid nystagmus, and blink constantly.’
    • ‘Potentially serious neurologic disease should be suspected in patients with focal neurologic signs, severe ataxia, nystagmus changing direction, vertical nystagmus and abnormal eye movement.’
    • ‘The direction of these beating, jerking, movements of the eye called nystagmus can actually tell a doctor which part of the inner ear has a problem.’
    • ‘Dysmetria, nystagmus, and cranial nerve palsies, especially involving the sixth and third nerves, may result from lesions of the brain stem and cerebellum.’
    • ‘The illness was characterised by gait disturbance, a relapsing and remitting course, nystagmus, and status epilepticus.’
    • ‘The physical examination demonstrated horizontal and vertical nystagmus, ataxia and peripheral neuropathy.’
    • ‘Side effects are similar to those of parenteral phenytoin: nystagmus, dizziness, pruritus, paraesthesias, headache, somnolence, and ataxia.’
    • ‘He is raising money through sponsorship for a charity which supports people suffering from nystagmus, an incurable eye condition.’
    • ‘Benign paroxysmal positional vertigo is a common disorder, characterized by a history of positional symptoms and positional nystagmus.’
    • ‘She suffers from a combination of dyslexia and a severe visual impairment consisting of severe photophobia, nystagmus and cone dystrophy.’
    • ‘The most common adverse effects are somnolence, dizziness, ataxia, fatigue and nystagmus.’
    • ‘Toxic side effects of phenytoin include nystagmus, dysarthria, diplopia, ataxia, and exacerbation of seizures.’
    • ‘Tremor can be found in multiple sclerosis often with slurred speech and jerky eye movements, called nystagmus.’
    • ‘They had slower reaction times for visual and auditory stimuli, as well as subtle chorea, dystonia, and nystagmus.’
    • ‘It principally manifests itself as an increase of the dark adaptation threshold, nystagmus, and often moderate to high short sightedness, although the refractive state may be long sighted or normal.’


Early 19th century: from Greek nustagmos ‘nodding, drowsiness’, from nustazein ‘nod, be sleepy’.