The Eye Illutions

Eye Illusions (Ambiguity Pictures)

See the face of a soldier and a man that is bending over on the below eye illusion.

soldier and bending man

Beautiful scene. But there is something more to it.

hidden baby

Who do you like more – women or saxophone players?

player and woman

Are there really just flowers?

flowers and faces eye illusion

You may read across and upright.

A-B-C or 12-13-14?


It is quite interesting that all numbers can be created by using only two numerals – 4 and 8.

84 illusion

Color Blindness Tests

1st Color Blindness Test – can you see a “12” on this plate?

number 12

2nd Color Blindness Test – there is a “26” on this plate.

3rd Color Blindness Test – can you trace a line from one “X” to the other?

trace a line

4th Color Blindness Test – you should see 58 (upper left), 18 (upper right), E (lower left) and 17 (lower right).

are you color blind?

Moving Objects Illusions

There is only illusory motion in the following static image due to color contrasts and shape position. (© Akiyoshi Kitaoka: Used with permission.)

no motion eye illusion

Another static picture. (© Akiyoshi Kitaoka: Used with permission.)

no motion

Motion is just an eye illusion. (© Akiyoshi Kitaoka: Used with permission.)

no motion

There is nothing moving below. (© Akiyoshi Kitaoka: Used with permission.)

no motion

A wonderful moving bicycle illusion. (© Akiyoshi Kitaoka: Used with permission.)


A hilarious moving curtain illusion. (© Akiyoshi Kitaoka: Used with permission.)


Moving circles. (© Akiyoshi Kitaoka: Used with permission.)

moving circles

Boats on the picture are not moving. It’s just an eye illusion. (© Akiyoshi Kitaoka: Used with permission.)

boat race

Stare at the dot in the center of the circle and then move your head closer to it. Neat!

moving circles

Impossible Objects Illusions

Our brain tries to do its best usually, however, there are instances when it fails to process correctly what the eye sees. The brain makes sense of shapes and symbols. It’s trying to put them together like a jigsaw puzzle, formulating that which isn’t there to that which is believable. 2D figure is subconscionsly interpreted as 3D object although such object can not exist.

The Penrose Triangle, also known as the tribar is one of the most well-known Impossible Figures. Try to trace a line in the triangle and you would have to trace it three times around the triangle before coming back to where you started. (by Roger Penrose)

penrose triangle

The Penrose stairs is a variation on the Penrose triangle. You could climb the stairs forever and never get any higher. That is only possible in two dimensions. This endless staicase can be found also in the paintings of M. C. Escher or also in the movie Inception by Christopher Nolan. (by Roger Penrose)

penrose stairs

This impossible object (blivet) is called “Devil’s Fork” or “Three-Pronged Poiuyt” or “Schuster’s Conundrum” (by D. H. Schuster)

devil's fork

This is one of classic optical illusions – it is called dancing elephant. Try to count the number of his legs (by Roger Shepard).

dancing elephant

Given the wood do you think you could make this


Another impossible figure.


Is the blue wall in the block or on the block? Is it the back wall or the side wall? You can flip back and forth between the two valid interpretations (so-called multistable perception). This ambiguous line drawing called Necker Cube was discoverd in 19th century.


A realistic photo or just another undecidable figure?


Is this a complete cube or just 3 sides of it?

cube vs. 3 sides

Try to arrange dice like this.


Another interesting building.


This corner house is a bit tricky. Question: Is the corner concave or convex? Use your palm to cover the upper half of the picture and the corner will be bulged out. However, if you cover the lower half, then it will seem as the inner corner. Amazing.


Word Illusions

If you can read the following picture, then you can shout …


bad eyes

Can you read the below?

west illusion

At first glance, what do you see? Could it be the word “liar” or is it something more. I would definitely give this one a second look!


This painting is called “Optical Illusion” – literally – you can read it (by John Langdon).

optical illusion ambigram

Victory or defeat? Both (by Veja Magazine).

victory or defeat

Have you ever noticed a hidden arrow in the FedEx logo? It stands for speed and precision. Check the space between “E” and “x”.

fedex logo hidden message

Try to say the color of the words, instead of actually reading them. You will find it surprisingly difficult. The right half of your brain is trying to say the colors, the left half is trying to say the word itself. This brain teaser is used by mountaineers to test if their concentration is ok. (by J. R. Stroop).

stroop effect

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