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“The duration of an attack is usually short and corresponds to the passage of emboli through the retinal circulation,” added the authors writing in the journal of Neurology.
They continued: “On other occasions, cholesterol emboli may cause permanent visual loss of creating a localised giant cell foreign body in the wall of the artery.”
The condition will be diagnosed if cholesterol crystals are demonstrated in arterioles.
Alternatively, a skin, renal, muscle or gastrointestinal tract biopsy may reveal crystal “ghosts” residing inside the vessels.