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.
In many cases, the MRA provides information that a doctor canât detect using an ultrasound, regular X-ray, or CT scan. The exam is also noninvasive. The images may be stored on a computer or printed on film. The difference between an MRI and an MRA is that an MRA is used specifically to examine blood vessels.