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Related Experiment Videos

Transient monocular blindness.

L J Kappelle1, R C J M Donders, A Algra

  • 1University Department of Neurology, University Medical Center Utrecht, Rudolph Magnus Institute for Neurosciences, Utrecht, The Netherlands. l.kappelle@neuro.azu.nl

Clinical and Experimental Hypertension (New York, N.Y. : 1993)
|July 13, 2006
PubMed
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Transient monocular blindness (TMB), or amaurosis fugax, is a temporary vision loss. Atherothromboembolism from the internal carotid artery is the most common cause, necessitating prompt risk factor management.

Area of Science:

  • Ophthalmology
  • Neurology
  • Vascular Medicine

Background:

  • Transient monocular blindness (TMB), also known as amaurosis fugax, presents as a temporary, complete loss of vision in one eye.
  • Common causes include atherothromboembolism from the internal carotid artery (ICA) and anterior optic nerve ischemia.
  • Less frequent causes involve central retinal vein thrombosis, ICA dissection, vascular malformations, and fibromuscular dysplasia.

Purpose of the Study:

  • To review the etiologies of transient monocular blindness.
  • To differentiate prognostic indicators associated with TMB.
  • To outline management strategies for patients experiencing TMB.

Main Methods:

  • Literature review of studies on transient monocular blindness.
  • Analysis of etiological factors and their prevalence.

Related Experiment Videos

  • Evaluation of diagnostic criteria and therapeutic interventions.

    • Main Results:

    • Atherothromboembolism originating from the ICA is the predominant cause of TMB.
    • Blurred vision suggests a higher risk of cardiovascular events compared to blackened vision or flashing.
    • Partial monocular field involvement generally indicates a more favorable prognosis.

    Conclusions:

    • Patients with atherosclerosis causing TMB require antiplatelet therapy and aggressive management of vascular risk factors.
    • Carotid endarterectomy is reserved for ICA stenosis exceeding 70% with additional stroke risk factors.
    • Understanding TMB's varied causes and prognoses is crucial for effective patient management and stroke prevention.