Today’s optical illusion is challenging viewers to find a hidden "5" among a sea of "2s." The tricky pattern plays with human perception, making it hard to spot the odd number. Can you find it?

The former glamour model, 45, has gone under the knife for a long list of procedures, most recently jetting to Turkey to have ...

Barney Saltzberg’s many picture books for children include “Arlo Needs Glasses,” about his giant goldendoodle who couldn’t ...

A unique collaboration between electrical engineers and ophthalmologists solves clinical, computational challenges.

Straining blocks clarity. The harder we force things, the more we limit creativity, connection, and insight. Wu-wei is the ...

The Princess of Wales' younger brother, 37, delighted fans with a rare glimpse of his one-year-old son, Inigo, who he shares ...