You have hawk eyes if you can spot three pandas without sunglasses in 8 secs!

One such illustration by Hungarian graphic artist Gergely Dudás has gone viral on the internet recently.

Optical Illusion

Optical illusion tests your observation skills in the form of brain teasers, or numeric or pictorial depictions. It is characterised by visual perception, which varies from reality. 

In layman’s terms, optical Illusion is a kind of illusion that we are not able to clearly observe with our naked eye. We easily misinterpret or get deceived by these images.