Flickering vision (like the old-time movies) with disorientation. Will only last a few moments. Sometimes with dizziness.

I agree, get an emergency appt with an ophthalmologist ( is an MD) not an optometrist (not an MD). You may be able to get them in quicker than a neurologist. The Eye Doctor can always refer you.

Refer patient with flashes urgently to ophthalmologist because they suggest intraocular disorder (vitreous, retina, optic nerve)
Refer patient with flickers urgently to ophthalmologist, neuro-ophthalmologist or neurologist unless diagnosis of migraine is obvious because they could also suggest transient ischemic attack or seizure


http://kellogg.umich.edu/theeyeshaveit/common/flashes_flickers.html