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.
Because MRA is a noninvasive procedure, it is very safe, and it can be performed in people of all ages. Unlike radiography, MRA does not expose you to ionizing radiation. Instead, magnetic resonance angiograms are created by using a magnetic field and radio-frequency waves.