A progressive lens design is like a bi- or tri-focal lens in that it corrects more than one vision problem at a time. However, these lenses have no visible lines, improving the cosmetic appearance of ...

What lens should I take ... Isles with friends or hiking for two weeks in the rain forest of Brazil? Different types of travel require radically different equipment choices.

Combining different glasses together resulted in a lens that corrected almost all aberrations. This type of lens is known as an Anastigmat, and the Protar was the first. There’s much more ...

The best lenses for astrophotography can help you create beautiful, detailed images of the night sky. Winter is the best time to do so. Owning one (or more) of the best lenses for astrophotography ...

What types of intraocular lenses (IOLs) are available? As you prepare for cataract surgery, you'll discuss IOL options with ...

It’s impossible for us to recommend the best Sony lens for everyone, simply because there are so many to choose between. From wide-angle primes to super-telephoto zooms, we’ve tested a whole ...