One such fine illustration can be seen in an old optical illusion where a Cat is hidden behind horizontal lines. The above optical illusion is a visual test that will play tricks on you by hiding ...

The key difference is that "5" has a small horizontal line at the top, while "S" is a continuous curve. Instead of looking at the entire image randomly, scan row by row or column by column.

Optical illusion often leaves people confused and intrigued. The new trend on the internet asking people to “find the curved lines” is no different. Users on Twitter are sharing the posts in ...