(Also read: Optical illusion: If you can spot hidden bird in this image, you'll be hailed as sharpest observer of the day) ...

Have you ever looked at a picture for a couple of seconds, only to discover there's more to it than you see? Optical illusions are able to deceive our brains, causing us to wonder what we're really ...

The number 508 is hiding in plain sight among the other numbers in the picture. Readers with 4K vision only can spot the number 508 in 8 seconds. Test your observation skills now!

Take a look here at the puzzle: The post was shared with a caption that reads: "Optical Illusion Test: People with good observation skills can solve this optical illusion test. Only 5% of people ...

THIS mind-bending optical illusion can reveal a lot of your personality ... The image was shared by TikTok creator Mia Yil, who claimed the picture can tell if you "always see the best in others ...