I also see multiple numbers and the eye amoebas. I'm always catching triples or doubles on the clock.
I find it comforting at the time.
I've also had coincidences around the number 13, being born on the 13th, living at number 13, turning 13 on Friday the 13th etc...
I like to say it's my lucky number.
My eye thing started at the last transit of Venus. I assumed I just stared too long, but it's not a burned out spot, more like little grey amoeba's as you say.