The S-cones make up only 8–12 percent of all cones in the retina and are almost completely absent in the absolute center of the fovea.” Taken all together, this means some colors are easily ...

A viral optical illusion challenges users to find hidden 'm's among rows of 'n's. The puzzle tests focus and attention to ...

The astronaut appears to be holding the cargo ship between his fingers. The post Astronaut captures funny optical illusion as ...

Optical illusions have become one of the most popular online engagement activities, turning everyday scrolling into a quick ...

Finding the hidden number in this zigzag optical illusion in under 21 seconds is a sign of above average vision. Take the test and find out what your eyes are capable of.

Museum of Illusions Orlando, the attraction located at at ICON Park, is rolling out a special ticket deal for April Fools', but it's no trick.