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This mind-boggling optical illusion quiz will leave your head spinning — how many can you solve?

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Things aren't always as they appear. Lenstore
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  • Lenstore, a contact lens retailer, created a quiz containing 11 optical illusions with explanations of how they work.
  • Colors, patterns, and shapes aren't always what they appear to be.
  • Take the quiz and see if you can figure out how the images are playing tricks on your eyes.

You can't believe everything you see. 

Optical illusions are designed to manipulate perspectives, colors, patterns, and shapes in ways that play tricks on your eyes. 

Lenstore, a contact lens retailer, created a quiz with 11 optical illusion-based questions.

Can you tell if the lines are straight or curved? Are those two circles really different sizes? And are those pictures actually identical?

Take the quiz below to see if you can solve these optical illusion puzzles.


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Talia Lakritz
Talia Lakritz
Talia Lakritz is a Life correspondent at Business Insider covering politics and power through a visual storytelling lens. She has reported from the White House as well as military installations, mansions, and museums across the country, bringing readers inside fascinating places through immersive features.Previously, she wrote for The New York Jewish Week and SciShow Space.Talia holds a BA in English with a concentration in Creative Writing from Barnard College of Columbia University and ordination as an interfaith minister from One Spirit Learning Alliance. She hopes to one day visit all 50 states and all 14 public presidential libraries.Politics and power:Visual features:Human interest: