Four Perfectly Round Circles

This made my head hurt.

Ohhh, yeah headache. It was like the big red ‘don’t press’ button, I had to do it.

I’d love to have that on a T-shirt

Photoshopped!!!

Blurring your vision by altering your focus point helps to see the circles too.

Hey gang,

I print tshirts. If anyone wants this on a shirt, I can get it to you for $15. Email me at team@recycled-tees.com

Thanks!

I thought PORNO wasn’t allowed on this site!

Seemed like a spiral to me at first. Focusing on the circles and following them with the eyes all the way around helped…

Woah! That’s a good one!

It’s a face AND a tree.

Neil is right. By blurring your vision you can see that they are indeed perfect circles. Well, squares that are put in a pattern to form a circle.

I turned into a zombie after looking

Now that was like riding on a ride at the fair. Started getting dizzy there for a minute.

it’s called an optical illusion, where have you people been? under a rock?

An optical illusion (also called a visual illusion) is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a percept that does not tally with a physical measurement of the stimulus source. There are three main types: literal optical illusions that create images that are different from the objects that make them, physiological ones that are the effects on the eyes and brain of excessive stimulation of a specific type (brightness, tilt, color, movement), and cognitive illusions where the eye and brain make unconscious inferences.
(stolen from wikipedia)

Is this wear I use the restroom!!

Excellent. I love these kind of pictures.

A lot of work must go into them, to do them right.

Um, I got nothing but very mild eyestrain. I think you need two eyes to see this illusion.