Blurry vision, ghost images and nighttime halos around lights all can be warning signs of eye problems. 1  A flood of spots and floaters in your field of vision. 2  A sensation that a dark curtain has settled across your field of view. 3  Sudden eye pain, redness, nausea and vomiting.  Double vision, double images or ghost images.
MR Angiography (MRA) MR angiography (MRA) uses a powerful magnetic field, radio waves and a computer to evaluate blood vessels and help identify abnormalities or diagnose atherosclerotic (plaque) disease.
Magnetic resonance angiography (MRA scan): An MRI scanner uses a high-powered magnet and a computer to create highly detailed images of the carotid artery and other arteries that supply the brain. MRA is superior to CT scanning in detecting strokes and most carotid artery problems.