Holy crap. I've been describing this to spouseanon for about 8 yrs. Yes, it happens to me. I jokingly call them downloads.
I've had one headache in my entire life & it was due to a sinus infection back in 1999. These prism visions are not from headaches. At least, not for me.
>>set in your head that it is something evil & sinister
Um, no. Please point me to where I said anything about something evil & sinister. STFU.
I was a Manager of a 475,000 sq. ft. office building in liberal hell Austin, full of crazy commies. Every year our company brought in flu shot nurse & every yr the employees basically shamed her out of the building. Liberal hippy types are very antivaxx.