Optical illusions are visual phenomena where our brain perceives something different from reality. They can fool us into ...

Getting light to hit our retinas depends on different parts of the eye working together. First, the light goes through the ...

This relaxing video provides a behind-the-scenes look at Sigma's factory in Japan, showing the full assembly process of its 70-200mm lens.

Europe’s Euclid space telescope has detected a rare halo of bright light around a nearby galaxy, astronomers reported Monday. The halo, known as an Einstein ring, encircles a galaxy 590 million ...

These goggles, crafted by the Thule people who lived in Alaska and northern Canada around 800 to 1600, are a very early ...

A new device for meibomian gland debridement was safe and effective and demonstrated time and space benefits compared with conventional debridement and expression approaches, according to a study ...