I sometimes can see intricate geometric patterns that work like gears across my vision field. It is like a semi transparent overlay. No schizophrenia, no drugs. My Aunt has done it. Scared her, but I love it. It is only on rare occasions. Also see electric static that fills up doorways but mostly as a child. It has always made me wonder and I can’t make it happen. It’s like a different realm feeling. I can also smell the ones who have past on occasion. Know if someone is pregnant or is about to die.