Optical Illusion Lines Squares Black Square Sticker
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Optical illusion Design Pattern with squares and lines. All the horizontal lines are straight and parallel. Believe it or not. Just get a ruler and test it out for yourself. It's a fun mind blowing brain teaser. An optical illusion is an illusion caused by the visual system and characterized by a visual percept that appears to differ from reality. The white blocks can be changed to any color that you want by customizing it.