The next number on your prescription is the cylindrical correction or CYL. This concerns how much of an astigmatism you have. Astigmatism occurs when the cornea or lens of the eye is more curved ...

There are three types of lens shapes typically found in ski goggles, all offering some different pros and cons. Here’s a quick guide on which might be best for you. Cylindrical: These are a ...

Interchangeable lens system opens up new shooting possibilities. Better battery life. Magnetic mounting system (finally). Optional USB-C pass-through charging. Excellent Log video support.

The fit and feel of contact lenses are very nuanced, and it can take some trial and error to make sure they’re just right. You want lenses that offer precise vision ...

There are some slick models on the market with impressive technical features. From cylindrical lenses and spherical lenses, dual lenses to interchangeable lenses, anti-fog coating which is the bare ...

Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio ...

Here’s how it works. The best iPhone lenses can quickly boost the quality of your smartphone photos and videos. Both the new iPhone 16 Pro models feature 5x telephoto lenses, while older iPhone ...

Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio ...

Astigmatism occurs when the cornea or lens has an irregular curvature, making it harder for light to focus correctly on the retina. Doctors don't know exactly why the shape of the cornea or lens ...