Monovision contact lenses, a common prescription, corrects each eye for a different distance, causing one image to be blurrier than the other and prompting some to misjudge the distance of a moving ...

As we age, our eyes lose their ability to focus up close. It's a condition called presbyopia, and it's both extremely common and relatively easy to fix, with solutions like reading glasses, bifocals, ...

Motion is characterized by a series of positions an object traverses over time. An object presented sequentially at two positions, with a time delay between them, is sufficient for us to perceive ...

Having a good weekend? Got some sun? Great. Grab some sunglasses and stare at the computer screen. We’ll show you an example of the Pulfrich illusion. The Pulfrich illusion, or Pulfrich effect, was ...

Researchers at the University of California, Santa Cruz, have developed a prototype for 3D+2D television that allows viewers with stereo glasses to see three-dimensional images, while viewers without ...