I could never see these, I always felt a little silly when the other kids were finding them so amazing. Turns out my left eye never really learned to collaborate. I was born with cross eyes and had the operation to straighten them out very young, but I guess it was too late and I was already wired to have a right dominant view. My left eye is basically one big peripheral spot to my vision. I still see movements in it but I need to look at stuff with my right eye to feel like I am "seeing" it.

My left eye also sees in a different focal length and hue of colours, it's more vibrant and things feel further away compared to my right (astigmatism?), I am sure that didn't help the collaboration.