Optical illusions are made to baffle the brain – and it's really something to get a conversation going.
Most of the time you'll find yourself looking at something your friend can't see, and that's normal with an illusion.
And this one that we're about to share with you is no different.
The image shows a number of coloured spots moving and only some people can see them.
Gala Spins, the creators behind the illusion, found 71% say the orange spots on the purple background are moving for them.
Meanwhile, over 57% of people claim the blue spots on the green background appear to be moving.
And 29% of players can only see the purple spots on a blue background moving.
So what do you see?
Bhavin Shah, Behavioural Optometrist at Central Vision Opticians, offered an explanation to the illusions.
He said: "The rotating motion is caused by signal processing of the complex image, especially in parts of the retina that are just outside the central part of the vision, as well as very tiny movements of the eyes.
"The brain assumes that the eyes are stable and not-moving, therefore it has to assume that the pattern must be moving instead, so the pattern starts to move. "
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Bhavin added: "Some people have more of these tiny eye movements than others and some are more sensitive to contrast in the pattern, so there will be some variation in the appearance of movement."
Are you looking for more optical illusions?
This mind-boggling illusion asks what shape do you see in the image.
More than 71% see a yellow butterfly, while 29% found two faces looking each other.
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