By the way, the "photochromic" sun specs which darken under UV exposure aren't quite the miracle claimed by their makers.    From Wordnik.com.  [Boats and Boating Online Resource Center. Find Boating News, Products and Services. Boating RSS Feed Available.] Reference

April 28th, 2009 WASHINGTON - A revolutionary 'photochromic' material developed by Japanese researchers changes colour instantaneously when exposed to light.    From Wordnik.com.  [Gaea Times (by Simple Thoughts) Breaking News and incisive views 24/7] Reference

Everything was built into the MHW and secured as tightly as the photochromic visor.    From Wordnik.com.  [Sentenced To Prism]

For years, photochromic lenses were too dark indoors, too light outdoors, and nerdy everywhere.    From Wordnik.com.  [Summer Test: Photochromic Sunglasses] Reference

The most effective way for specs wearers to protect their eyes on an everyday basis is to wear photochromic lenses.    From Wordnik.com.  [Archive 2008-06-01] Reference

Transitions Lens are photochromic lenses that protect against UV light and help preserve the long-term health and well being of your eyes.    From Wordnik.com.  [Archive 2008-06-01] Reference

I've got photochromic lenses already, but I'm pretty sure that's not what you meant by shades ... although top hat + wolfshead cane + mirrored lenses does sound pretty badass.    From Wordnik.com.  [Torture, a present of Goth Girls, wings and corsets and a weekend challenge to YOU] Reference

The materials of the photochromic lenses can be glass or plastic.    From Wordnik.com.  [EzineArticles] Reference

However, they double as photochromic sunglasses for inside or outside.    From Wordnik.com.  [USATODAY.com News] Reference

The photochromic ink is activated when exposed to sunlight or UV light.    From Wordnik.com.  [Veer: Ideas: The Skinny] Reference

Transitions lenses are the # 1 recommended photochromic lenses worldwide.    From Wordnik.com. Reference

Transitions® lenses are the #1-recommended photochromic lenses worldwide.    From Wordnik.com.  [Transitions Optical Taps DDB New York as Global Agency of Record - Yahoo! Finance] Reference

If you wear photochromic glasses, you don't have to wear sunglasses anymore.    From Wordnik.com.  [EzineArticles] Reference

My lenses are kind of special and also are photochromic -- thus the expense.    From Wordnik.com.  [Varilux Lenses] Reference

Do not worry, terms like photochromic and polarized may have stumped even Einstein!.    From Wordnik.com.  [Daily Gadget] Reference

Transitions Optical offers the most advanced photochromic technology globally and its.    From Wordnik.com.  [Transitions Optical Taps DDB New York as Global Agency of Record - Yahoo! Finance] Reference

Finally, the UV chamber lets you see how dark photochromic lenses get in a few seconds.    From Wordnik.com.  [Ubergizmo] Reference

And another Chemcor adaptation in photochromic sunglasses also fizzled in the retail market.    From Wordnik.com.  [Gaea Times (by Simple Thoughts) Breaking News and incisive views 24/7] Reference

UV-activated, photochromic and polarised lenses darken and lighten to provide optimum vision in all conditions.    From Wordnik.com.  [Telegraph.co.uk: news, business, sport, the Daily Telegraph newspaper, Sunday Telegraph] Reference

The contact lens on the left (blue) contains photochromic dyes that darken the lens in the presence of UV light.    From Wordnik.com.  [Technology Review RSS Feeds] Reference

Also, at the end of the quarter, we announced a partnership with Oakley as they plan on offering a photochromic product line.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

Transitions Optical offers the most advanced photochromic technology in the widest selection of lens designs, materials and brand names.    From Wordnik.com. Reference

Conventional transition sunglasses are coated with millions of molecules of photochromic dyes, which are transparent when out of the sun.    From Wordnik.com.  [Technology Review RSS Feeds] Reference

My glasses is only 4 months old, it's got a cute frame and pink color and it has photochromic lenses that turns to dark when exposed to sun.    From Wordnik.com.  [blueapron] Reference

Part of the trick was to find a suitable photochromic material whose clear and opaque parts would remain stable after the initial exposure to light.    From Wordnik.com.  [Science Blog - Science news straight from the source] Reference

The Transitions Optical Interactive Merchandiser educates consumers and store personnel regarding the variety of photochromic lens options available.    From Wordnik.com.  [Retail Solutions Online Products] Reference

March 3 - WASHINGTON, March 3/PRNewswire-USNewswire/-- Transitions Optical, Inc., the nation's leading manufacturer of photochromic treatments that darken.    From Wordnik.com.  [WN.com - Business News] Reference

One of the educational tools on Transitions Optical's Web site shows how photochromic lenses, like Transitions (R) lenses, activate when exposed to the sun.    From Wordnik.com.  [Hispanic Business Magazine] Reference

They say that part of the trick was to find a suitable photochromic material whose clear and opaque parts would remain stable after the initial exposure to light.    From Wordnik.com. Reference

The first to successfully commercialize a plastic photochromic lens in 1990, today the company is a leading provider of photochromics to optical manufacturers worldwide.    From Wordnik.com. Reference

The new line introduces photochromic lenses that change as quickly as the scenery, automatically dimming and brightening to adjust to the beautiful mountain surroundings.    From Wordnik.com.  [We Blog A Lot] Reference

Phytochromes are red / far-red photochromic biliprotein photoreceptors, which in plants regulate seed germination, stem extension, flowering time, and many other light effects.    From Wordnik.com.  [Proceedings of the National Academy of Sciences current issue] Reference

His were obviously trying for a reading, which I wasn’t about to offer, thanks to my photochromic lenses.    From Wordnik.com.  [I Am Not A Psychic!] Reference

These lenses are both photochromic AND polarized.    From Wordnik.com.  [PezCyclingNews.com] Reference

Ink: 1 / 1 + photochromic ink + varnish.    From Wordnik.com.  [Veer: Ideas: The Skinny] Reference

The photochromic ink was printed over top.    From Wordnik.com.  [Veer: Ideas: The Skinny] Reference

Oliver Peoples "Bartley photochromic aviators".    From Wordnik.com.  [Archive 2009-05-01] Reference