Optical illusions with hidden images are amazing for testing your visual powers. These illusion images challenge your brain's ...

A visual evoked potential (VEP) test is one test that a doctor may use to diagnose multiple sclerosis and monitor disease treatment and progression. Your brain and spinal cord make up your central ...

In our today's optical illusion, we bring you a mind-bending visual test that’s challenging even the sharpest eyes online. Among a wall of identical-looking “404” patterns, there’s a single trio that ...

Observational skills puzzles are designed to test and improve a person's ability to notice details, patterns, and differences in visual or logical scenarios. These puzzles often require close ...