For 15 seconds, viewers watch a series of black and white patterns. As they focus on the video, the shapes appear to move and ...

Discover how optical illusions trick your brain with viral puzzles and science secrets. Learn why we see moving images, hidden cats, and color tricks in static pictures.

Learn the 5 critical vision changes that signal stroke. Recognizing these eye symptoms could save your life or a loved one's when every second counts.

American Optical Co. (Southbridge, Mass.) last week announced a new trick to detect fakers who claim eye injuries, expected the trick to be of interest to insurance companies and industrial ...