Summer is on our doorstep, and the sun is shining for longer! It’s important to protect our eyes from sunlight. With photochromic corrective lenses, the lens adapts to changes in lighting conditions.
But how do they work? And when is the best time to use them?
Photochromic lenses are lenses that change color in reaction to sunlight. When exposed to UV light, they darken and change from ordinary corrective lenses to sunglass lenses. When exposed to UV radiation, such as sunlight, photochromic corrective lenses undergo a reversible chemical reaction that causes them to darken. When no longer exposed to UV light, they gradually return to their initial state of transparency.
When should you use photochromic lenses?
Contrary to what you might think, we’re not just exposed to UV light on sunny days. Even on a cloudy day sunlight filters through and reaches our eyes. These lenses darken just enough to protect our eyes from this exposure to UV light. With photochromic corrective lenses, you won’t have to worry about keeping a separate pair of sunglasses with you, because your photochromic lenses will adapt to every change in lighting conditions. This makes them perfect for outdoor activities or whenever you’ll be in variable lighting conditions. They protect you from UV rays and reduce glare. Photochromic lenses are available in a range of colors, from the traditional grey and brown to bolder colors like purple, green, or blue.
Divel Italia’s Fotochroma lenses
FOTOCHROMA is Divel’s photochromic lens made using the most advanced photochromic technologies, so you get the most innovative pigment reactions to changing lighting conditions. Our 1.56-index Fotochroma lenses are available in 6 fashion colors, the intensity of which changes as lighting conditions change. Available in an elegant shade of GREY, our 1.61-index Fotochroma lenses are made by way of advanced spin coating, which lays a super-thin coating of photochromic pigments across the surface of the lens. This layer, protected beneath a hardening treatment, activates extremely quickly when exposed to sunlight.
Fotocolor lenses
The lenses in our FOTOCOLOR collection are photochromic lenses that start with a tinted base. They are made using monofocal or progressive TRANSITIONS® lenses. Lenses made with Transitions® technology adapt quickly when moving from indoors to outdoors, darkening super-fast when exposed to intense sunlight, while ensuring visual comfort and protecting your eyes from UV rays. Our Fotocolor lenses come in 8 solid or gradient colors. They darken in uniform tones of grey or brown. Our photochromic lenses with Transitions® technology automatically adapt to changes in light, intensifying the color based on the lighting conditions.
What’s better, photochromic or polarized?
Photochromic lenses are one of the best technologies because they adapt to all lighting conditions, so that you always get the best vision possible. However, it is important to know that photochromic lenses are different from polarized lenses in that their protective function only activates under certain conditions and light intensities.
When driving, for example, given that a large part of the UV light is absorbed by the windshield, photochromic lenses might not darken enough to protect against glare. Wearing a pair of polarized sunglasses, on the other hand, you get clear vision even in glary conditions, because polarized lenses reduce glare from sunlight. Polarized sunglass lenses are designed specifically to minimize glare as they protect our eyes from UV light. Polarized lenses neutralize reflected light and other sources of glare, while increasing contrast for clear, well-defined vision.
Not all photochromic lenses are made the same
You don’t necessarily have to wear polarized lenses to protect against glare when driving.
Lenses with Drivewear technology, which combines NuPolar polarization with Transitions® technology, are photochromic lenses that protect your eyes against the sort of blinding glare you can experience when at the wheel, because they darken even when looking through a windshield.
So the function of polarized and photochromic lenses is different, and their use will depend on the circumstances. For use in variable lighting conditions, choose photochromic lenses. But for prolonged use outdoors in constant exposure to sunlight, polarized lenses are the way to go.
How much do photochromic and polarized lenses cost? As a rule of thumb, depending on the corrective power and coatings applied, and without considering special promotions, the price of Transitions® lenses can vary:
- A pair of prescription lenses should cost between €500 and €700
- A pair of standard lenses should cost between €230 and €300
Our Fotocolor lenses are priced similarly to Transitions® lenses.
For our Fotochroma lenses, retail prices will vary:
- A pair of prescription lenses should cost between €350 and €500
- A pair of standard lenses should cost between €200 and €250 Other functional coatings can also be applied to give you the type of protection you need from your glasses, from a standard hardening treatment to our top-of-the-line Performance coating.
How should you clean photochromic lenses? To see clearly, your lenses need to be perfectly clean and in good condition. This is why you need to clean your eyewear daily using water, cleanser and a soft cloth or other special cleaning solutions or disinfectants recommended by your optician. You should also keep in mind that added coatings not only improve the performance of your lenses; they can also increase their durability and resistance to wear and tear. And you can apply all our coatings to both photochromic and polarized lenses, including: Hard, Silken, Chroma, Silken White, Performance and Performance+.
Discover our Fotochroma lenses
Discover our Fotocolor lenses