i woudn't call it an hallucination, Ryask, but more like a brain blip,,, the brain does strange things,, and you might be experiencing some minor little electrical event, not a seizure, but like that,, where the brain is not producing the chemicals it needs, and that is reflected in the visual centers. still, i hope you mention it to a doc, if you have one, it could be something else,,, best wishes~ Gus