(Also read: Eye-test challenge: Can you count all the horses ... focus can count all the turtles in this image) As these visual puzzles spread across the internet, they continue to captivate ...

Research claims made over recent years that people of East Asian and European descent perform differently on a well-known visual perception test as a result of fundamental cultural differences may ...

So, how good is your colour perception? The test is the brainchild of Colorlite ... The Delboeuf illusion is one type of visual illusion where a dot surrounded by a large ring is typically ...