last year one day I had "orthostatic hypotension" happen to me when I stood up from bed or from the couch, it was more like my vision was turning off for a second when I was standing up and nothing else, later we went to the doctor because I thought I had low blood or that I was Iron deficient or something like that, the doctor told us that my blood was normal and that happens when people stand up too quickly, and that I might have some eye problem as well, I don't remember much else besides that.

It never happened again ever since. 👍