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Acute retinal arterial ischemia.

Michael Dattilo1, Nancy J Newman1,2,3, Valérie Biousse1,2

  • 1Department of Ophthalmology, Emory University School of Medicine, Atlanta, GA, USA.

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|September 11, 2018
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Summary
This summary is machine-generated.

Acute retinal arterial ischemia, including vision loss and artery occlusion, is an emergency. Prompt diagnosis and work-up are crucial for preventing future strokes and heart attacks, as vision outcomes are irreversible.

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Area of Science:

  • Ophthalmology
  • Neurology
  • Vascular Medicine

Background:

  • Acute retinal arterial ischemia encompasses transient monocular vision loss (TMVL), branch retinal artery occlusion (BRAO), central retinal artery occlusion (CRAO), and ophthalmic artery occlusion (OAO).
  • It is frequently caused by emboli originating from the carotid artery, heart, or aortic arch, leading to retinal artery occlusion.
  • This condition is the ocular manifestation of acute cerebral ischemia, constituting an ophthalmic and medical emergency.

Purpose of the Study:

  • To highlight the critical nature of acute retinal arterial ischemia.
  • To emphasize the high risk of subsequent vascular events in affected patients.
  • To underscore the importance of prompt diagnosis, urgent specialist referral, and comprehensive work-up for secondary prevention.

Main Methods:

  • Review of clinical presentations and common etiologies of acute retinal arterial ischemia.
  • Discussion of diagnostic work-up, including neuroimaging, vascular imaging, and cardiac evaluation.
  • Emphasis on the current lack of treatments to restore vision post-occlusion and the focus on secondary prevention.

Main Results:

  • Acute retinal arterial ischemia is primarily embolic, originating from ipsilateral carotid arteries, the heart, or the aortic arch.
  • Patients face a significant risk of subsequent cerebrovascular accidents (strokes) and myocardial infarctions (MIs).
  • No established treatments can reverse vision loss from permanent retinal artery occlusion.

Conclusions:

  • Acute retinal arterial ischemia requires immediate medical attention and specialist consultation.
  • Urgent diagnostic evaluation is essential to identify and treat underlying causes, such as carotid stenosis or dissection.
  • Management focuses on secondary prevention strategies to mitigate the risk of future systemic vascular events.