This maddening optical illusion will mess with your brain – and possibly wreck your eyesight.
The image, called ‘Ninio’s Extinction Illusion’, contains 12 black dots dispersed in a pattern such that the human brain finds it difficult to ‘spot’ them all at once.
While the dots are evenly located throughout the image, the way light receptors in people’s eyes function means they can only see three or four of them at a time.
READ MORE: Shape-shifting cylinders: Epic optical illusion mystifies the internet (VIDEO)
The extinction grid is a variation on a classic optical illusion, the Hermann Grid, which dates back to the 19th century.
On Sunday, the bizarre Ninio illusion was shared by a user on Twitter, who found it on Facebook, and it has since been retweeted an incredible 24,000 times.
Some Tweeters simply couldn’t handle the ‘challenge’.
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