Over the past few years I have had what I believe (after googling!) to be ocular migraines. They occurred very infrequently in the past - the first when I was pregnant in 2005 and another a few years later. But in the past couple of months I've had them more frequently. I've just had my second in as many weeks.
They start as a small circular blind spot, which is like black and white stripes. The circle opens up and gets slowly bigger, still flashing, until it is a crescent in my peripheral vision. Eventually it disappears. It probably lasts around 20 minutes in total.
Does anyone else have these? And if so have you ever spoken with anyone about them? I'm not unduly worried. Migraines are prevalent in my family with both my mother and my sister suffering. My sister suffers to the extent of being very ill for a couple of days at a time. I feel fortunate that I don't experience any sickness or pain with mine; my main worry I suppose is that they may develop into something worse over time.
If anyone has experienced them or knows anything about them, please come and talk to me about them 