If you get flashes of light in one of your eyes (particularly if middle-aged or older)...

[laundry_queen]

48. Mine are related to hormones

So fortunately I can control them to an extent with a low and constant dose of birth control pill (the kind with only 1 amount of hormones) and I only go off the pills for 1 week every 6 months. My mom had the same issue and now that she's well past menopause, she doesn't get the auras ever. I'm hoping that's the case for me as well. I also noticed a correlation with my blood sugar levels (I have insulin resistance and can get hypoglycemic symptoms). I've also heard that aspartame can cause them, but it didn't make much of a difference for me. It's frustrating, and I have had it start while driving but was fortunate enough to get home before it obstructed my vision - usually before I see the colors, there's a small pin dot in the centre of my vision that warns me.