In this mind-bending puzzle, there are three numbers that are visible - 21, 22, and 23. But there is a third number in this ...

In our today’s optical illusion eye test, we bring you an engaging optical illusion that challenges your observation skills. Hidden among dozens of identical cartoon dogs is one sneaky cat. Can you ...

Optical illusions are mind-stimulating brain puzzles created to play tricks with your eyes and challenge your senses. Optical illusions deceive the ey ...

An optics lab at the University of Arizona (UA) is using new 3D imaging techniques based on deflectometry to create innovative eye-tracking technology, with apps ranging from entertainment headsets to ...

Most optical sensors produce an electrical output. The authors introduce a method for eye tracking with high accuracy. The method uses single-shot deflectometry measurements of the eye surface ...

Tracking the movements of the human eye with high accuracy, however, is a daunting challenge. Researchers at the University of Arizona Wyant College of Optical Sciences have now demonstrated an ...