I've always had floaters in my eyes. They're slightly more populous now, but I don't really care. The occasional flash, however, I could do without. My OB suggested I should go to the eye doctor.

Results: Nothing neurologically wrong with me. Apart from, yknow, myopia and a mild touch of astigmatism, my eyes are entirely healthy.

Prognosis: Flashers are almost certainly indicators of a migraine, especially if it's happening in both eyes rather than just one.

Treatment: Hope that migraine doesn't have to mean headache. Suffer otherwise.