I have a history of intense migraines. However, the older I've gotten the less often I have them. Also, I know how to respond (and do so at the first sign) so they do not have the opportunity to get so bad. I am otherwise healthy, height and weight proportionate, I exercise often and eat ok, not the best, but not the worst. In the last 3 or 4 weeks, I've had episodes of what I would describe as "flutterly vision" It appears quickly and will last 20 or 30 minutes usually resulting in a headache, sometimes a migraine. What happens is my eyesight is somewhat blind at the focal point. Outwards from there it's dynamic in the sense that it almost seems like television white noise, fluttering in my field of vision. My peripheral vision is slightly affected, but it appears mostly to distort my vision at the focal point. Can somebody help? Is this serious, I've had this happen in the past, but I'm concerned because it seems like its occurring more frequently.