New Delhi, Oct. 15 -- Optical illusions are the internet's favorite pastime. These puzzles challenge one's observation skills and focus. A new optical illusion on Reddit has stumped the internet. Posted on the subreddit r/opticalillusions, the tricky image challenges the perception of users.

The photo left many people confused, proving that a small difference in colors, patterns or shapes can completely change perception.

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The image shared on the Subreddit contains a colored grid box. At a glance, the box will look like it's made up of crooked lines. The Redditor titled the image, "These are all straight lines."

If you observe...