A non-trek related one from the Bsky page that I thought was amazing:

Its been 30 years, I still dont see anything

Ah, I was expecting Klingons.

Good luck if you're looking at this on a phone, is all I can say. You probably want to have Mr. Data put it on the main viewer screen first.

These are called magic eye by many but are technically stereograms.

Firstly it requires two working eyes. That can align together.

So people with cross eye or a lazy eye can't do these. Though these can be used to help such people train their eyes to work together better.

They are easier to learn to do as a kid. Adults who never have successfully done the trick really struggle with it. But it's not impossible to learn.

Also. For some people they make people feel nauseous.

Also. The more you practice the easier it gets.

You build up an ability rather quickly because it's muscles you already use. You are just learning to "decouple accommodation and vergence "

By this I mean. When you look at something with both eyes, they converge together at that point in space. The angles of each eye meets.

Accommodation in vision refers to how the lens in your eye (the one behind the iris, not the cornea) changes in shape to focus light. Like how a focusing ring on a camera works.

Vergence and accommodations are synergistically linked. Meaning the often influence one another and function together. Each providing feedback to other to tune that ability to look at something with both eyes and it be brought to focus.

Here is how it relates to stereograms.

The trick to see them is to disconnect your accommodation from vergence.

Your eyes must converge to a point farther away than the actual location of the image. But accommodation must match the actual image location.

You are looking farther away yet your eye is focusing on the image. So it's clear and not blurry.

You can also do this where the vergence is in front of the image but that's way harder and took me a while to get the hang of it. It also causes more eye strain. These magic eye images are not intended to be viewed that way.

Now that you know the mechanism , this might help you figure out tactics to see the image.

Essentially it looks like 3d objects covered in wall paper pattern. There aren't any surface details. Just 3d shapes.

Hope that helps!

Is it a schooner?

I'm an 80s kid, I never was able to see these right

What am I supposed to see here?

It must be schooner.

My greatest regret from having central blind spots in one eye is that I cannot really do these any more even though I very much know how to do them.

I was one of those AuDHD sensory kids before we had such buzzwords, and I got the original Magic Eye and later Magic Eye II at the school book fair! The first time one popped into focus blew my frickin mind! I looked at those things so much that to this day I can do the eye diverging thing at will with nothing to focus on. Just look right through the TV, lol.

However, right now there's some coral reef documentary footage on screen, and I did the eye diverging intro a swirling school of fish. Got a bit 3D and trippy, lol.

I've always just used the crosseye method resulting in the inverted image.

Looks like 2 enemy ships at different angles and then a weird blob for some reason in the top right

That's got to be one of the toughest to maintain magic eyes I've seen yet.

Those sneaky guys!

Really wanted to be able to swipe for more!

these always seem backwards. I resolve them inside out.

Thanks .... now I have to book an appointment with my optometrist

Ooh, outnumbered! Not looking good for the old Enterprise…