You have 20/20 vision if you can find 78 in 7 seconds!
Optical illusions trick our visual system into seeing things that aren’t actually there or misinterpreting what we observe.
Optical illusion: Can you spot the number '78' in less than 7 seconds?
Challenge your observation skills with this optical illusion by finding the hidden number '78' among numerous '70s' within 7 ...
Think you’ve got sharp eyes? Spot the hidden 78 in this brain teaser in under 7 seconds to prove you have perfect vision
A VISUAL intelligence test that deciphers if you have top-tier vision has been created by boffins.  In the challenge, the ...