You have to find 16 circles within 25 seconds, not just 4, 5, or 5. Optical illusions can reveal a lot about a person's personality. These brain teasers can be a good exercise for your mind.

Enjoy the story and take the test. It is important to mention that only 1% of people will be able to see all the circles together. Check out the image below to see if you're among the 1%.

Rules You Should Follow While Observing The Illusion: Before you look at the image, close your eyes for at least five seconds.

Now, please open the file and take 25 seconds to look at it. Within seconds of viewing the image, you will see the circles.

What's in the image? This image contains several squares that are arranged in black-and-white lines. 

Viewers who stare at the image continuously notice a change in its pattern. Instead of seeing a square, they see circles. Count the circles to see that there are 16 of each. Did you notice it?

Viewers who stare at the image continuously notice a change in its pattern. Instead of seeing a square, they see circles. Count the circles to see that there are 16 of each. Did you notice it?

If you still have trouble seeing the circles, we can help. Focus on the correct spot. Look at the image below for an idea of "where you should focus".