This optical illusion will make you see something that does not exist in your home.

So what should be done?

Look carefully for 30 seconds at the four dots in the center of the image. Then, suddenly shift your gaze to the ceiling or a light wall and blink often, often. An incredible show, right?

This optical illusion is based on the phenomenon of visual perception, called afterimage. After having looked at an object for a long time, we continue to observe its trace, although the object itself has already disappeared from our field of vision: it seems to have imprinted itself on our retina.

But why do we see something completely different from what is shown in the photo? In theory, the same image should appear before your eyes! The fact is that the brain helps us: it draws incomprehensible or incomplete images. Thus, the abstraction turns into a completely different image with colors and details.

Here is another illusion that is built on the afterimage effect. Look carefully at the cross in the center of the image for 30 seconds, then look at the ceiling and wait for the image to appear. If not, try flashing.