Ocular motility disorders

Synonym(s): Oculomotor Disorders - Ocular Torticollis - Internuclear Ophthalmoplegia - Cyclophoria - Parinaud's Syndrome

Definition: Incoherence or instability in eye movements.

Additional information for professionals: Damage to the ocular muscles (damage to the neuromuscular junction, as in myasthenia gravis) or to the common cranial ocular motor nerves (III, IV and VI) on their way from the visual cortex to the EYE, due to tumours or vascular or haemorrhagic damage. They can cause CONVERGENT or DIVERGENT STRABISM, DIPLOPIA, eyelid PTOSIS, ocular torticollis (to compensate for damage to the IV), opsoclonus (rapid eye movements) sometimes associated with myoclonus.

Hierarchical classification:

• Diseases of the nervous system
• Diseases of the central nervous system
• Ocular motility disorders

See also:

• Common ocular motor nerve, diseases
• Pathological nystagmus
• Ophthalmoplegia
• Chronic progressive external ophthalmoplegia
• Strabismus
• Miller-Fisher syndrome
• Tolosa-Hunt syndrome
• Duane eyeball retraction syndrome