In the United States alone, about 45 million people wear contact lenses to correct their vision. While not as popular as traditional glasses, contact lenses have distinct advantages for eye health and ...

A camera lens filter is pretty much what you’d expect: it’s a physical piece of glass that attaches to your camera’s lens, filters the light before it reaches the sensor and, typically, has an effect ...

Bifocal contact lenses allow a person to see clearly both at a distance and up close by correcting near, intermediate, and distance vision. Anyone interested in trying bifocal contact lenses can ...

Forbes contributors publish independent expert analyses and insights. David Hochman covers the worlds of luxury, travel, and entertainment. Zeiss considers more than just your prescription when ...

“In optics, there was a problem,” says Amit Agrawal, a physicist at the National Institute of Standards and Technology in Gaithersburg, Md. If you wanted to focus a single lens to two different points ...

For clarity I’m not talking about recent history. I’m talking about SLR lenses from the 1980s, 1970s or earlier, where lenses had manual focus, aperture rings and the pinnacle of technological ...