Whether you need new lenses for your everyday glasses or sunglass frames, online retailers can replace your prescription lenses.

Before ordering, Zenni Optical suggests visiting an eye doctor for a prescription. The company can provide glasses for those with astigmatism or who need bifocal or progressive lenses.

A Finnish startup is reinventing eyeglasses with real-time autofocus lenses that could make bifocals a thing of the past.

When do your contact lenses expire? If you don't know the answer, you should hear what eye doctors have to say.

So much for same-day, even overnight, service! Back on May 21, 2012, I got my eyes examined and ordered my glasses for no-line bifocals with a special non-glare coating, scratch-resistant. ...

Just because two people look the same doesn't mean they don't have differences. Find out what makes you unique.

Dielectric lens antennas are attracting the attention of researchers for applications at higher frequencies due to their high radiation capability, low side lobe levels, and simple structure. This ...