Amaurosis fugax

• Facts:
  Caused by retinal emboli from the ipsilateral carotid artery
  May be warning sign for an impending stroke
• History / PE:
  Transient, PAINLESS, monocular vision loss ("curtain falling down")
  
• Diagnosis:
  Zones of whitened, edematous retina (ophthalmoscopy)
  Cholesterol particles (Hollenhorst bodies)
  Duplex ultrasound of the neck
• Treatment:
  Atherosclerosis management
• Associated With:
  Atherosclerosis
  Cardiovascular disease
  HTN
• Differential Diagnosis:
  Central retinal artery occlusion
  Central retinal vein occlusion
  Vitreous hemorrhage (hard to visualize fundus)