Do you have 6/6 vision and razor-sharp focus? This optical illusion challenge is your chance to prove it. Hidden within this grid of red digits is a sneaky number 6 — surrounded by similar-looking ...

Technology used by UC Berkeley researchers to see a new color may allow for development of new ways to see and research eye diseases. The machine, dubbed Oz, was previously used to shoot lasers into ...

Millions globally live with colour blindness, often unaware of their condition. An optometrist shares a quick, one-minute ...