Who do you see in this image?
If you have good vision, the image of Marilyn Monroe should be replaced by Albert Einstein as the image moves towards you.
However, if you still see the blond bombshell and not fuzzy-haired genius, a visit to an optician would probably be a good idea.
The illusion tests your ability to focus and pick up contrasts and was created by a Massachusetts Institute of Technology team led by Professor Aude Oliva.
MailOnline reported that Professor Oliva has spent decades exploring how images can be hidden inside other images using ‘words, textures and other objects’.
Here are a few other images to test your eyes:
For this piece, stand two metres back and slowly walk towards a normal reading distance from the screen.
You should see a car turn into the dolphin.
What about this one?
If you give the same treatment to these three tiger pictures, the images should change from being identical to showing different expressions.
As you approach these two seemingly identical photos, the woman’s face on the right should turn into a cat’s.