An optical illusion has left social media users confused as to what and how many numbers are inside this puzzle.
The illusion picture was posted on the micro-blogging social media application by user @benonwine. It shows a black and white circle that has numbers. The changing pattern has become a puzzle for the netizens.
“DO you see a number?” the question read. “If so, what number?”
DO you see a number?
If so, what number? pic.twitter.com/wUK0HBXQZF
— Benonwine (@benonwine) February 16, 2022
The netizens shot their arrows in the dark in the comments section. They also came up with weird reactions to puzzle.
Definitely 45283, with a 2 or 8 at the start. Not getting any hint of a number after the 3.
— Jock High (@jockhigh) February 17, 2022
845283
— Divlinjo86 (@dovlinjo86) February 19, 2022
3452839 now that I see there’s another two digits.
— Rebecca, with 🤗🤓🏳️⚧️ 🦖🦕BLM | ACAB even UK 1ₛ (@gellman_rebecca) February 18, 2022
4528
— مینه ګبینه (@gabeeno) February 19, 2022
It turned out that the illusion picture is a case of contrast sensitivity.
According to Vision Centre: “Contrast sensitivity is the ability to distinguish between an object and the background behind it. Contrast sensitivity is different from visual acuity, which measures how clear your vision is at a given distance.”
“A contrast sensitivity test measures how well you can tell the difference between light and dark. For this, your doctor will use a different type of chart where the characters fade from black to grey gradually,” it added.
