What is a photochromic lens?
It’s a lens that is clear indoors, and gets dark outdoors, then clear again when you go inside. The darkening is a chemical process that is activated by the presence of ultraviolet (UV) rays.

All photochromic lenses aren’t made the same way.
Ordinary photochromic lenses have a thin coating of colour changing molecules on only the front surface of the lens, like the paint on a wall. With Rodenstock ColorMatic^® Extra, the technology is built in, not added on™ – the molecules are built in throughout the lens material.

Rodenstock’s ColorMatic® Extra lenses do more than just darken in the sun!

Consistent colour through every stage of activation.
Only ColorMatic^® Extra lenses give you the true grey or true brown colour you want and expect. Other lenses can activate to unwanted colours during the intermediate stages of darkening and at different angles to UV rays.

Darkens up to 50% in the car.
ColorMatic^® Extra responds even behind a windshield, which keeps ordinary photochromic lenses from darkening.

Anti-reflective coating compatible.
Today, most eyeglass wearers want the glare protection of an anti-reflective coating to make night driving safer and to reduce eye strain when working at computers. Conventional photochromic lenses can lose their ability to perform optimally after being AR coated.

Up to a 4-year lifespan.
All plastic photochromic lenses experience “fatigue” over time - the ability to lighten and darken lessens with use. ColorMatic^® Extra won’t “fatigue” for up to four years - ordinary photochromic lenses begin fatiguing after about one year. So if a single ColorMatic® Extra lens is damaged, both lenses in a pair of glasses do not have to be replaced to achieve a colour or performance match.

Less temperature sensitive.
They are not too dark in cold weather and not too light in hot weather.

UV Protection included.
Built in ultra violet block, protecting your eyes from the harmful effects of the suns rays (UVA/UVB)