Do you find that black spots appearing? How many black dots can you count? This illusion is a classical one and originally discovered by Elke Lingelbach.
Find Your Blind Spot Trick
Another popular one – and quite unnerving if you’ve never seen it before… Close your left and eye and just focus your right eye on the tiny cross. At some point the big circle will disappear as it crosses your ‘blind spot’. If you can’t see this effect, then try sitting closer/further from the screen.
Find Your Blind Spot Trick
Another popular one – and quite unnerving if you’ve never seen it before… Close your left and eye and just focus your right eye on the tiny cross. At some point the big circle will disappear as it crosses your ‘blind spot’. If you can’t see this effect, then try sitting closer/further from the screen.