MedSchool: Ace Your OSCEsThe Medical Company
GET - On the App Store

Internuclear Ophthalmoplegia



  • If present, internuclear ophthalmoplegia is highly suggestive of a lesion affecting the medial longitudinal fasciculus within the brainstem, which is involved in conjugate gaze.
  • The most common causes of lesions in this area would be stroke (older patients) or multiple sclerosis (younger patients).
    • Look For

    • Inability to adduct one eye, with nystagmus in the other eye.
    • Causes of Internuclear Ophthalmoplegia

    • Multiple sclerosis
    • Ischaemic stroke
    • Trauma
    • Infection
    • Tumour
    • Haemorrhage
    • Vasculitis
Want more info like this?
  • Your electronic clinical medicine handbook
  • Guides to help pass your exams
  • Tools every medical student needs
  • Quick diagrams to have the answers, fast
  • Quizzes to test your knowledge
Sign Up Now