Optical illusions are visual images that are created to trick our brain. They are also called visual illusions and are often used as simple intelligence tests; their popularity is reflected in their widespread use in pop culture.
There are three main types of optical illusions: literal, physiological and cognitive.
Literal illusions occur when our brain misinterprets the physical properties of an object.
Physiological illusions are caused by the way our eyes and brain process light and color.
Cognitive illusions occur when our brains make assumptions about what we see, even when the evidence contradicts those assumptions.
Also read: A puzzle to test your attention: Find all the hidden animals in 11 seconds!
According to research, regular practice of optical illusions can improve concentration and prevent cognitive decline in adults.
Do you want to know how sharp your eyes are?
Try this challenge and find out now!
Optical Illusion Eye Test – Find the hidden number in 4 seconds
Source: YouTube
The image shared above shows a blurred image with a bright red background.
A number is hidden in this blurred image. The challenge for you is to find that number in 4 seconds.
You have to carefully observe the picture and spot the hidden number in 6 seconds.
Did you spot the hidden number?
Harry up; the clock is ticking.
Look at the picture again; you may be very close to spotting the hidden number.
AND…
The time has passed.
Stop looking!
Some of our sharp-eyed puzzlers may have already spotted the hidden number.
Also read: Puzzle to test your IQ: Find the name of the fifth son in 5 seconds!
Congratulations! You have a perfect set of eyes with 20/20 vision.
Some of our less fortunate users may know where the hidden number is?
See the answer below.
Find the hidden number in 4 seconds – the solution
The hidden number is 723 and can be seen if you move your head a few centimeters from the screen while focusing on the image for a while.
That was fun, wasn’t it?
Before you go, check out more challenges and interesting texts in the recommended reading section below.
Recommended reading
Optical illusion to test your eyesight: Find the hidden elephant in 7 seconds!
You have eagle eyes if you can spot a hidden snake in a tree in 9 seconds!
Categories: Optical Illusion
Source: newstars.edu.vn