There's a Hidden Image in Every Picture

We will dig into the specifics of what makes Magic Eye pictures work. But before doing so, you must know what these are all about. If you still remember the '90s Magic Eye craze, you can probably skip this little explanation. If not, you're in for a real treat!
The picture above may look like a sheer mess of random shapes and colors, much like a Jackson Pollock painting. But what would you say if we told you that it hides a perfectly-clear 3D image? Can you see it? No? Well, it's actually (kind of) easier than it seems.
The Magic Is In The Eye

The name says it all: Magic Eye. And the magic truly is in the eye of the beholder. Solving Magic Eye pictures can be extremely easy or extremely hard, depending on the person. Some people just look at it and instinctively understand how it works. Others are not so lucky...
Still, it's all about not giving up and continuing to try. Take this picture, for instance: look directly at its center and focus, as if you were trying to look through the picture instead of simply staring at it. Can you see the little 3D fishes? Congratulations, you're a natural!
It's Okay; Magic Eye-Rage is a Thing

The thing about "seeing" Magic Eye pictures is that it's very hard to put into words. We will surely try our best to help you see beyond the sheer messy, colorful patterns. But keep in mind that Magic Eye rage is a real thing; we all had that friend back in the day who just couldn't understand how these pictures worked...
Fortunately, learning how to solve a Magic Eye picture is exactly like riding a bike: if you do it once, you'll be able to do it forever. So please don't give up right now if you don't see a thing because it's genuinely easier than it seems.
Look At What's "Behind" the Picture

Okay, this Magic Eye picture is perfect for practicing because it contains a clear hidden 3D image depicting the words "Carpe Diem." Here's how you can see it: put the picture right in front of your eyes and look straight through it. At first, it will feel kind of blurry, but that's just part of the process.
If you still can't see a thing, try to move your head back and forth to try to unveil the hidden 3D image. Remember to always look at the picture as if you were trying to see what's "behind" it instead of carefully analyzing the pattern. Keep trying until the 3D image appears.
A Fascinating Visual Effect

So, can you see it now? If so, that means you're 100% ready to unveil the secret image behind every Magic Eye picture. These autumn leaves, for instance, hide a very kinky 3D message that we're pretty sure will make you laugh.
But now that you're a Magic Eye pro, you're probably wondering: how is this even possible? Surely we've heard about visual effects and illusions before, but Magic Eye pictures really are on a whole other level. In a way, they defy our common sense by giving depth to an assumingly flat image. But how does this even work?
Stereopsis & Seeing in "Stereo"

It all started with the idea of stereopsis. Putting it simply, stereopsis is a term that refers to the perception of depth and 3D concerning the fact that we have not one but two eyes. Think about it: since we see with both eyes, two slightly different images are always being projected to the retina of the eye.
Compare it to sound: back in the early '50s, speakers were monophonic, meaning there was only one sound source per record. But when stereo was created, most records became stereophonic, with two different sound sources. This made for a higher depth in sound: the music just sounded wider and more authentic.
From Stereograms to Autostereograms

The stereopsis' scientific notion inspired the neuroscientist Béla Julesz to create the first random-dot stereograms, which were simple black-and-white pictures. Julesz's stereograms were uncomplicated but revolutionary and were the basis for the invention of the autostereogram.
The autostereogram is actually computer-generated and was initially produced by Christopher Tyler, a former student of Julesz. Autostereograms like the one you see above (containing a "secret" heart) are, essentially, un-marketed Magic Eye pictures! The practical science behind these images is so fun and quirky it was only a matter of time before they started to be branded as an entertainment product.
But Is It Just Entertainment?

Magic Eye pictures are fun. They're like a crossover between a quirky visual illusion and a little puzzle for our eyes. But they also have very important academic value. Stereograms were invented by a scientist for a reason: because they can tell us a lot about the way our eyes work.
How is it that we have this strange ability to turn a seemingly random collection of dots into a cohesive 3D image? The answer lies in the fact we have two separate eyes, something the scientists call binocular stereopsis. But it's not just that...
Binocular Stereopsis

Binocular stereopsis is also known as stereo vision and relates to our ability to derive information regarding the distance of two objects, based solely on the position of such objects in the two eyes. It sounds complicated, but it's really pretty simple.
The stereo sound metaphor is a perfect way of understanding binocular stereopsis since the same basic principle applies to our ears. In fact, the whole human body is mostly symmetrical, made of two nearly-identical halves. But if we literally see two different sets of images at all times, why does seeing feels like such a cohesive experience?
Two Eyes, One Focal Point

Scientists claim we see two sets of images at all instances, but it sure doesn't feel like it. In our everyday experience, it's not like we sometimes think we're seeing double (mind the occasional heavy drinker). So, what's going on?
Fortunately, humans are well-made machines! Our eyes are usually fixated on two severely-constrained optic axes. These optic axes force our eyes to look at the same single point, making it impossible for one of the eyes to "see" something the other does not. That's why binocular stereopsis works, and that's why we can't just tell one of our eyes to look one way and order the other to do the opposite.
It's a Trick On Our Eyes and Brains

Binocular stereopsis is fundamental in the way our vision works, but how does it apply to stereograms and autostereograms? Fascinatingly, these computer-generated pictures are messing up with the way our eyes work to present us with a coherent single image in the context of a random repeating pattern.
When the viewer converges the two eyes at a point behind the pattern, autostereograms start doing their magic. At that moment, our brains are tricked into thinking that element A (seen by the left eye) and element B (seen by the right eye) form just one single image. In fact, such an image isn't there in the stereogram; it's in our eyes.
Just Like 3D Glasses

The way our eyes work is the inspiration behind countless visual tricks. One of such was also a huge '90s fad, much like Magic Eye pictures. And yes, we're talking about those old-school 3D glasses that came with a red lens and a blue lens.
If you used these bi-colored glasses to watch a movie, the two different lenses tricked your brain into thinking that some of the images were popping out of the screen. In fact, this sort of 3D picture looks almost exactly like the 3D images revealed in Magic Eye pictures. Just like stereograms, 3D glasses play with our binocular perception of depth.
Introducing the Fun

No, 3D glasses were certainly not the big-screen revolution many hoped for. But Magic Eye pictures remain arguably the most entertaining thing to come out of Julesz and Tyler's academic experiments. But, as you can imagine, making the transition from "fringe scientifical concept" to bonafide '90s fad didn't happen overnight.
In fact, we owe the concept of the Magic Eye pictures to three visionary creators: engineer Tom Baccei, 3D artist Cheri Smith, and programmer Bob Salitsky. They were responsible for turning Julesz's experiments into something fun, marketable, and accessible to everyone. But how did it all happen?
A Casual Encounter

Before popularizing the Magic Eye pictures, Tom Baccei was the U.S. manager of Pentica Systems, a British technology company that sold in-circuit emulators. But his whole life was turned upside down when he stumbled upon a magazine called Stereo World. It was there he saw one of Tyler's first autostereograms.
Baccei was fascinated by the picture and asked Bob Salitsky for some help to design an original autostereogram for a Pentica Systems ad. Later on, Baccei met with the 3D artist Cheri Smith, who convinced him of the artwork-potential that existed in autostereograms.
Baccei's Epiphany

Baccei and his collaborators believed in the commercial potential of autostereograms so much that they decided to create a sub-company just for the purpose. They continued to develop stereogram-inspired ads before turning their attention to something completely different.
Following a moment that Baccei describes as an epiphany, they decided to start selling autostereograms, and he couldn't have been more successful... Baccei and the team picked up the name "Magic Eye" because it translated well into Japanese (one of Baccei's favorite markets) and because it contained the word "magic." Soon enough, every major publisher wanted a piece of the action!
A Worldwide Phenomenon

Baccei and the rest of the team combined efforts with the publisher Mark Gregorek and printed the first editions of the ever-popular Magic Eye books. They became overnight bestsellers, and the first edition of 30,000 was sold-out almost instantly. Within 24 hours of the release of the first American copies of Magic Eye, publishers were asking for a new run of 500,000 books!
To put it in terms we all understand, Magic Eye was going viral, and in a big way! The books were gathering interest from huge companies such as Disney and Looney Tunes, and autostereogram fans couldn't get enough of the "drug-like" sensation of solving the Magic Eye pictures.
It Was Not For Everybody...

Part of what made Magic Eye such a popular fad is that some people just couldn't see it. Frustratingly enough, Magic Eye pictures aren't intuitive enough for some folks, who can never get past the immediately-recognizable random patterns.
This can be infuriating if you're on the "not see" side. But it may also have contributed to the popularity of the fad: if you were part of the group of people who were capable of seeing the hidden 3D image, you were filled with this satisfying feeling of overcoming, as if your eyes had a secret superpower!
But... Why?

There are several scientifical ways of explaining why some people can't see the hidden 3D image in an autostereogram. Binocular stereopsis and optic axes are very important in the study of strabism, and this condition can prevent you from enjoying a Magic Eye picture to its fullest.
Other eye-related problems, such as cataracts, can also prevent you from seeing the hidden image in a stereogram. But in most cases, the people who miss the hidden 3D image are simply looking at the pictures the wrong way... But what exactly are they missing?
Don't Give Up Just Yet

If you still can't understand Magic Eye pictures, this is probably a frustrating read for you. But don't give up just yet, because we can help you to see what's hiding behind the messy pattern. All it takes is a bit of practice.
We must admit it's not easy to explain to someone how to unveil a Magic Eye picture. But we will try our very best. The trick is in your eyes, but it's more about the way you look at the images and less about what your eyes can do. With all that we've learned in mind, let's try to figure this out together.
Let's Do This Together!

We have a ton of Magic Eye pictures up next for you to enjoy, but we need to make sure you're going to see the hidden 3D image. Otherwise, you'll just be looking at random blurry pics, which is not fun at all... We will be trying different approaches to help you to see the hidden 3D image, but first, make sure you're in a proper environment.
Try to have the Magic Eye picture right in front of you, and make sure there's enough light in the room for your eyes not to hurt. But most importantly, remember what we've learned: it's all about the focal point!
Can You Spot the Animal?

This is an easy one to start. There's a 3D animal hidden behind this picture of TV static, and it's all about looking at it the right way. Once again, remember that it's crucial to find that ideal focal point in which your optic axes cross to make the visual illusion come alive.
Don't look at the static per se. Try to look at what's behind the picture, as if you were trying to spot a fish that's swimming in deep waters. Moving your head back and forth can be useful, and so does crossing your eyes as if you were trying to look at your nose.
Animated Autostereogram

Wall-eyed viewing is a perfect name to describe the technique of spotting the hidden 3D images in autostereograms. But to those who don't understand this approach, looking at an animated Magic Eye picture can be a very good alternative.
Maybe this way is easier? Try to isolate one single point at the center of this animated picture using only your eyes, and you will immediately recognize the figure of a shark. The key is to see that one cohesive object is lying at the center of the image and NOT focusing on the countless little dots of static.
Can You Find The Name?

After our animated shark, there's no better follow-up than this ocean-inspired autostereogram. But when you look closely and apply all of the techniques we've told you about, you may be surprised to discover a 3D-shaped first name.
We'll give you a little clue: it's a woman's name. But can you spot it? If you're using your computer to look at this pic, try this: force your eyes to look at the image as if you were attempting to see the space that's behind your computer screen. We know it makes no sense at first, but it will help you to spot the 3D name.
Just Beautiful

Just like the 3D artist/Magic Eye collaborator Cheri Smith predicted in the '90s, autostereograms can be artworks, and some make for a genuinely convincing aesthetical experience. Take this beautiful picture, for instance.
The immediately-recognizable shapes and colors all work together to make the hidden 3D image look more impressive. There's something amazingly beautiful about looking at this image and spotting a mesmerizing 3D spiral take form right in front of our eyes. To our understanding, there's really no reason why anyone wouldn't think of Magic Eye pictures as a bonafide form of art.
Scarily Addictive

In the '90s, the Magic Eye fad was compared to a drug, and we can't really disagree. Once you start looking at these images the right way, it's certainly hard to stop. It's a contagiously fun exercise that we can only describe as "eating candy with your eyes."
Even "scary" autostereograms like this punk-rock Magic Eye picture are immensely satisfying. Once again, remember that the key is to find that one focal point that will reveal the concealed 3D skull that's underlined in the picture. Once you start, you will not be able to stop!
One For the Pros

Autostereograms can be easy or hard, depending on whether you see the hidden images or not. But some pictures are harder to crack than others. Autosetereograms that contain immediately-recognizable symbols, like this emoji-filled picture, are probably the most challenging.
Since there's a clear visual reference for your eyes to focus on, it can be twice as hard to find that underlying 3D image. But don't be afraid, because it's still very easy once you get the hang of it. And surprise, surprise, the hidden image in this picture is... Yet another emoji.
Majestic!

This is quickly becoming one of our favorite-ever Magic Eye pictures. It's inspired by Ancient Egypt and by the devotion Egyptians showed to cats. The paw-like prints at the bottom of the image can make it hard to spot the legs of the cat, but the detail on the underlying 3D image is fascinating.
While most secret Magic Eye pictures lack some elements, usually depicting basic 3D shapes, this majestic cat is exquisitely detailed, especially when it comes to the face. Coincidentally, the cat's face is a great point for you to focus on if you're still struggling with autostereograms. It's slightly left to the top center of the image.
Can You Name the Animal?

Animals/wildlife make for are one of the most common topics in Magic Eye pictures. We guess it makes sense: likely, our binocular vision is originally shaped to make us spot potential predators in the midst of a pattern-filled environment such as a dense forest or a large field.
With that in mind, it's probably easier to spot animal-shaped figures in the context of autostereogram. Maybe our brains are simply more "accustomed" to it? Either way, here's a nice challenge for you: can you name the animal in the pic? Let's just say it rhymes with "bolf."
It’s Visual Rock & Roll

Magic Eye pictures make for such a psychedelic type of image that it's almost sad they weren't invented during the '60s. Still, they're pretty much the visual-equivalent of some chill-inducing rock and roll music, and they have been used by successful musicians before.
In 1993, the Dave Matthews Band released Remember Two Things, an original recording that contained an autostereogram on the cover. It made for a 3D image of a "peace sign" and showed just how popular Magic Eye pictures were at the time. On top, there's a quite fun pair of bells for you to spot. Take your time: this one's a toughie.
In Many Shapes and Forms

All autostereograms use the same basic principles to be, well, autostereograms. Still, it's fascinating just how versatile these visual wonders can be. At first glance, this image doesn't look like a Magic Eye picture at all. It looks like some sort of PC wallpaper that just got messed-up with on one of the sides.
But if you take a closer look, you'll realize this is a fully-functioning autostereogram. Funnily enough, even some things you find in your day-to-day life can constitute an accidental Magic Eye picture: checked notebooks make for a great example. Try to look at a blank checked notebook page, and you'll notice the Magic Eye effect.
The Elephant in the Room

We love this Magic Eye picture because it's a great symbolic representation of what Magic Eye is all about. In the naked eye, it's a messy picture of the Savannah, containing patterns we associate with different animals, such as zebras and giraffes.
But in the midst of all of this visual chaos, there's an underlying cohesive image, showing a perfectly-shaped elephant. Inadvertently or not, it makes for a great metaphor of the way our eyes work: to navigate in our visually chaotic world, we need to sometimes focus on seeing just one thing, spotting the big picture.
Still Can't See It?

If you made it this far but still can't see the underlying 3D image, we think this makes for a great turning point. In this cornfield-inspired picture, there's a 3D hawk for you to spot, and we want you to see it!
Remember all the things that we've told you. Try to focus on one single point and to look at the image as if you were trying to see what's behind it, and not the immediately-recognizable 2D pattern. You'll recognize a basic shape (that's one of the hawk's wings), and you just have to make your eyes do the rest of the work to see the entire hawk.
Put a Ring On It

Remember the Beyoncé hit "Single Ladies (Put a Ring On It)?" In the song, Beyoncé sang that "If you liked it, then you shoulda put a ring on it," but the creators of this impressive autostereogram decided to use a whole eight!
"Eight? But I can only count seven." If that's the case, then you're not looking at this autostereogram the right way. Besides the seven clearly-identifiable rings on the bottom of the picture, there's a big 3D one for you to uncover. If you can crack this Magic Eye visual puzzle, it does make for an impressive sight since the rings on the bottom add a whole new dimension of depth to the picture.
One For a Rainy Day

There's no doubt all shapes can be turned into entertaining Magic Eye pictures. Here's yet another example of how fun and diverse these visual plays can be. At first glance, you expect this autostereogram to contain some sort of flower-inspired shape, or perhaps a nice little bee.
But in the end, it's the picture of an umbrella. Since the umbrella's shaft happens to divide the image in half, it can be initially hard to recognize the object. But the same logic also provides the image with an otherworldly sense of depth, reinforced by the two contrasting patterns present in both sides of the pic.
Watch Out For Eye Fatigue

We've said before that Magic Eye pictures are utterly addictive, and can anyone really disagree? Once you start playing with these images, it's hard to know when to stop. But watch out! Too much of anything is bad, even if we're talking about seemingly harmless visual illusions.
Your eyes can get tired from looking at Magic Eye pictures for too long, so it's probably a good idea to give it a rest. Sometimes, if we look at an autostereogram for too long, we find ourselves "autostereogramming" everything we see, and that can make our eyes feel very tired.
A Cup of Coffee?

We've learned about the science behind Magic Eye pictures, but they still can feel Magical! At first glance, this autostereogram may seem like a bunch of coffee beans, but when you look closely, the beans transform into a delicious cup of coffee.
Coffee is one of the world's most popular hot beverages. There are 30 different types of coffee available, with Brazil being the number one coffee producer in the world, making 7.8 million pounds of coffee every single year. The strongest commercially-available coffee is called Devil Mountain Coffee Black Label and contains 1,555 mg of caffeine per 12 ounces.
A Sight of the Gods

Almost everything can be turned into a Magic Eye picture. We've seen lots of wild animals, some symbols, and even trivial objects such as an umbrella and a cup of coffee. But even the Gods have shown up to play their part.
In this autostereogram, Lord Ganesha hides underneath a messy Hindu-inspired pattern, and it's up to you to spot him out. Ganesha is one of the many Gods of the Hindu pantheon, and he's known for his elephant head and his reputation as a divine remover of obstacles.
Pegasus

Greek mythology is filled with some great characters, and Pegasus is one of our favorites. A winged white horse that was popularized in the Hercules animated films, Pegasus decided to show up to grace this beautiful autostereogram.
It's a classical Magic Eye picture containing a solid immediately-recognizable pattern. While all sorts of crazy patterns can hide 3D images, we find the steadier, most constant ones to be the type of pattern that works best. That "secret" 3D Pegasus is as clear as it could be, and we think the outside pattern plays a huge role.
A Tiny Chemistry Class

They call it the 'Blue Planet' for a reason. In this enlightening Magic Eye picture, you just need to focus for a second to spot the chemical formula for water. Remember chemistry classes? That's right, the formula is H2O, and it's waiting for you right in the middle of this seemingly-normal picture of the globe.
The planet we call home is made of numerous different elements and substances, with the most common being oxygen (46%) and silicon (26%). Some of Earth's other predominant elements include aluminum, iron, calcium, sodium, magnesium, potassium, and titanium.
It's Just Seeing... With a Twist of Fun

There's no doubt that Magic Eye pictures are a perfect crossover between the worlds of science and entertainment. They make use of the way our eyes naturally work to hide and uncover beautiful 3D images that are just wonderful to look at.
While Magic Eye pictures are still seen as a '90s fad today, we believe there's no real expiration date for them. While these beautiful images are no longer a novelty, it's still refreshing and exciting to find a new autostereogram we can enjoy. It's an addictive and harmless activity that puts a fun twist on something as trivial as seeing. Have fun!