I don't think it was silly of you to put your question in this section, but since it concerns a physical symptom, I'd suggest you make sure that all the mundane possibilities are ruled out before you start thinking that what you're seeing are faeries, orbs, the edge of your aura or whatever.

What you describe is very likely nothing to worry about, but it would be very silly of you to accept a mystical or spiritual explanation when the mundane alternative could be a problem with your eyes, brain, nerves or some other aspect of your body's functions which, if left undiagnosed and untreated, could leave you with a serious disability or worse. If you discuss the symptoms with a doctor and he or she says that you're in great health and your eyes are fine, shrugs and says the flashes are just one of those things, then it would be reasonable for you to start looking for magical, mystical explanations.

Until you get that all-clear, you'd be wiser to assume that your mundane symptoms are due to a mundane cause.