Dr. Greenstein answers the question: 'Types Of Intraocular Lens Implants?' Aug. 24, 2009— -- Question: What are the different types of intraocular lens implants and how do I decide on which one ...

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 ...

“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 ...

Scientists have developed a new type of lens that creates multiple focal points, which could make for glasses or contacts that provide a clearer view over a range of distances. The secret? Making the ...

Copenhagen, Denmark: Patients who have a new type of lens implanted in their eyes during surgery for cataracts or to correct their eyesight have excellent or good vision over distances both near and ...

Contact lenses provide a discreet and practical alternative to traditional eyeglasses. With options for nearly every vision need, including daily disposables, toric lenses, and colored lenses, ...

If you are a Hackaday reader, you probably know what a Fresnel lens is. You find them in everything from overhead projectors to VR headsets. While it seems commonplace now, the Fresnel lens was an ...