Diplopia (double vision) is a rare but disturbing condition. It happens when the images of objects before you are formed in different parts of the retinas in your two eyes. Many disorders of the eye ...

When the lenses inside your glasses break, it’s like an extension of your own body has been damaged (minus the physical pain, of course). But just because your lenses are compromised doesn’t mean you ...

Trifocal lenses correct three types of vision: close-up, intermediate, and distance. You may be more familiar with correction for distances far away and near, but you likely use your intermediate ...

TRIOPTICS introduces the OptiCentric ® Compact for manual centration testing and lens alignment. It features fast and simple work processes as well as TRIOPTICS’ well-established high measurement ...

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 products, ...