Vision Care Product News

APR 2016

Product information for optical people.

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Page 85 of 115

VCPN VISIONCAREPRODUCTS.COM V C T 84 // APRIL 2016 From their launch in 1991 through a joint partnership between PPG and Es- silor, plastic photochromic lenses have become a popular lens option for mil- lions of eyeglass wearers around the world. Now produced by a number of companies, many U.S. lens and sun- wear companies offer them. The result is a cornucopia of products for you and so that when they are completely dark, they deliver their full polarized potential. Transitions Vantage lenses convey all the benefts of photochro- mic and polarized lenses in one pair of eyeglasses. Offered by Younger Optics, Tran- sitions Drivewear lenses are both photochromic and polarized but are designed for driving and outdoor use. Drivewear lenses use a fxed polarized layer that delivers continuous glare reduction and improved contrast en- hancement. The variable tint changes from an olive green to a copper color when inside a car. Outdoors, the lenses become dark brown when fully activated. Because the lenses were de- signed specifcally for the challenges drivers face, they are an excellent op- tion for the vast majority of people who get behind the wheel of a car. It should be noted that these lenses are not conducive to night driving and patients should be told. A PHOTOCHROMIC BIFOCAL Another breakthrough in photochro- mics that Younger Optics worked on VSP sunsync photochromic lenses are available in the company's full portfolio of UNITY lenses. mics are lenses that use the Transi- tions process. Transitions Optical partners with ophthalmic lens and sunwear companies so they can offer photochromic lenses. Transitions Signature VII lenses are more reactive to indirect light than previous versions and are fully clear indoors. Using an exclusive them ideal for those who are light sensitive or who desire a lens that will be even darker outdoors or behind the windshield of a car. POLARIZED PHOTOCHROMICS Transitions Vantage lenses are both photochromic and polarized (the only lens with variable polarization). Indoors, the lenses have a slight gray tint and no polarization. As they acti- vate to UV light, they become increas- ingly darker gray and more polarized The Transitions VII Flat Top 28 from Younger is a polycarbonate composite lens that incorporates a thin photochromic front surface bifocal layer made of Trivex. From their launch in 1991, plastic photochromic lenses have become a popular lens option for millions of eyeglass wearers around the world. your patients to choose from. Here is an overview of what is available. A lens menu of today's photochro- mic lenses includes plano, single vision, multifocal and progressive lenses, readily available in a wide variety of lens materials including polycarbonate, CR-39, Trivex, NXT, several mid- and high-index materi- als, a number of proprietary materi- als and a spectrum of colors and dif- ferent dark and light ranges. BEST-KNOWN PHOTOCHROMICS The most well-known photochro- dye formulation called Chromea7 technology, these lenses are less de- pendent on temperature and alti- tude. This means that Signature VII lenses will be darker than before on hot days without sacrifcing any in- door clarity. The lenses are offered in myriad designs, materials and colors, depending on the company offering them. Some patients prefer a lens that is not completely clear indoors. Transi- tions XTRActive lenses are the com- pany's darkest photochromic lenses with a hint of tint indoors, making

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