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What Number Do You See? This Optical Illusion Makes People See Different Numbers


What Number Do You See? This Optical Illusion Makes People See Different Numbers

Can you read the numbers?

Who doesn’t love being shoved an optical illusion that drives the internet apart because that blue looks gold? Well, there might never be another one that’s as controversial as that one, but we have another interesting one that’s making rounds on the internet.

Can you see it?


“DO you see a number? If so, what number?” wrote Twitter user Benonwine while sharing this piece of illusion. The tweet saw over 6,350 replies, with many able to see the ‘528’ in the middle.


To help our readers identify it, here it is. The number actually shows 3452839.

Another user also showed a trick on his phone to see the number clearly.

He pulled the notification bar down and blurred the stripes, which made the numbers look clearer. And that’s that into solving the illusion, but what does this mean for us?

It’s actually a simple eye test for contrast sensitivity, a factor that can determine how good is your visual function.


Specs Network shares, “Contrast sensitivity is an important measure of visual function, especially in situations of low light, fog or glare, when the contrast between objects and their background often is reduced.”

“Night driving is an activity that requires good contrast sensitivity for safety.”

Another source from Vision Center explains, “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.”

“You can have excellent visual acuity but reduced contrast sensitivity and vice versa.”

Low contrast sensitivity can be a sign of glaucoma or cataracts.

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