I’m pretty sure the scene from Mallrats was based on me. I stood and stared at those at the mall for days and could never see them. Finally one day - 20ish years later it finally clicked and now I can see them.

I can somewhat move my eyes independently. I credit this skill to us having had magic eyes books as a kid and I just learned to control eye muscles willingly.

This is a great random question. Me likey

Yes. They require stereoscopic vision. When I was doing research on 3D displays about 10% of subjects had to be rejected because they were stereo blind. They had no idea they were that way.

One woman said that explains why she had the nickname clunk in high school. She had a habit of rearending cars.

I see them inverted. I’m left handed, I figure that has something to do with it

Yes.

The instructions say don’t cross your eyes but that’s horseshit and probably why so many people fail to see them.

My method is to cross my eyes, then uncross them slowly until the 3d effect appears, then hold on that position.

Yes, you have to imagine you are looking into a mirror at yourself and focus your eyes on that place; look past the image.

Yep. There was one on the Sunday comics page every week when I was a kid, and I learned how to do it then. I never understood the people who can’t do it, or thought it was fake.

Someone made a modified version of Quake back in the day, that rendered to stereoscopic 3D in a white noise pattern.

It was such a mindfuck to play!

You get 3D depth but no colors or shades or contrast. It’s just shapes moving. So doors that were flush with the wall were impossible to see, but enemies in dark rooms were fully visible because there is no light or dark.

I like to imagine I got to experience what a bat sees with echolocation.

Yes. I can change my vision’s focal point and focus distance at will, so it’s usually easy even though my eyesight is getting fucky with age.

My parents were of the opinion they were an elaborate hoax until they had me draw what I saw in one of them.

This was in a newspaper 30 or so years ago maybe. The image was accompanied by a depth-map image of what should be visible, but they covered that up. Then they asked if I’d looked at the newspaper before them because, even with my terrible art skills, it was clearly what was in the depth-map version.

I think they believed me in the end though.

I finally realized how to reliably do it in my early 20s (a while ago now) but still can to this day. Just have to start with it at my face haha.

Yes.

Yeah, but I have to stick my face right up close and slowly move it away to do so.

Phone/tablet screens work best for it.

I can view the convergent (cross-eyed) ones no problem. I managed once to focus on the divergent ones with like 30 minutes of practice, but I had trouble focusing normally afterwards for like an hour so I haven’t tried since.