An officemate showed this to me and I was amazed with this optical illusion.
Here’s how it goes:
1) Relax and concentrate on the four (4) small dots in the middle of the picture for about 30 to 40 seconds.
2) Then, take a look at a wall near you (any smooth, single-colored surface)
3) You will see a circle of light forming.
4) Start blinking your eyes a couple of times and you will see a figure emerging…
5) What do you see? Or moreover, who do you see?