The peripheral drift illusion causes us to perceive motion in a still image. A new study shows that the mechanism of this illusion relies on changes in pupil size.

Today’s collection of mind-bending optical illusions and confusing-perspective photos is here to give your brain a workout.

A new optical illusion eye test is challenging people to find a hidden 508 among a sea of 503s and 305s in just 10 seconds. This brain teaser tricks your perception using visual crowding and pattern ...

Optical illusions take advantage of this by presenting mind-bending visuals that challenge our usual way of seeing things. These illusions—whether physical, physiological, or cognitive—can ...

Only those with a sharp eye and a strong focus can spot it within seconds. This optical illusion is a classic example of a visual puzzle that exploits the brain’s tendency to seek patterns. Our eyes ...

Big 12 basketball has never been this hard to watch. The league insists on playing on a floor that has been likened to a magic eye illusion or a Louis Vuitton handbag. Hoping to modernize its look ...

They can deceive our eyes into seeing things that aren't there or trick us into believing things that aren't actually there. These optical illusions were referred to as witchcraft, demons, or bad ...

Psychologists at The University of Glasgow found that staring at an optical illusion can improve eye sight by allowing you to see small print. How can optical illusions and brainteasers help me?

Thankfully technology has developed since the early days of the internet and CAPTCHAs are a little less frustrating, but one new version has caught my eye. May I present optical illusion CAPTCHAs.

In this illusion, the penguin is camouflaged so well that your eyes will naturally focus on the ... Image: The Sun UK Still can’t find it? Don’t feel bad—this optical illusion has left ...

Our brain and eyes can play tricks on us, especially with the expanding hole illusion. A new computer model developed by Flinders University experts helps to explain how cells in the human retina ...