People who can’t even focus can tell a black and white world from a colorful one. And yet there’s an optical illusion that plays tricks with even that most basic sense.

There's no dress this time - just a simple black-and-white banana. But this optical illusion uses what's called the Fechner effect to convince your brain that it's seeing colours where there are none.

Video February 10, 2016 0:47 Stare at the black dot in the centre of this picture for long enough and a black-and-white image will appear to be in full colour.

Fabulous BLACK TO BASICS Stunning optical illusion means you’ll see this picture in colour – but it’s actually black-and-white Becky Pemberton Published: 10:12, 2 Sep 2021 Updated: 10:13, 2 ...

Watch amazing optical illusion which makes black and white image appear to be in COLOUR You may think you have gone temporarily insane, but this is actually a common optical illusion ...

You may think you have gone temporarily insane, but this is actually a common optical illusion mirror News By Ruth Halkon 22:10, 9 FEB 2016 Updated07:13, 10 FEB 2016 Bookmark Video Loading ...