Photochromic Prescription Lenses
Your eyes don’t spot the various transitions from light to dark tint. The colors between medium and dark tint can also differ to answer specific needs such as for example driving.
By immersing plastic lenses in a chemical bath, photochromatic molecules are absorbed in to the body of the lenses to a uniform depth around 150 microns. Since this absorbed layer of molecules is the same thickness over the entire lens surface, the color-change effect is also uniform over the lenses, regardless of prescription.
Do you expect to wear them for driving, hiking, jogging, or fishing? If you will be skiing, utilizing a smartphone or camera display, or flying a plane, they’re not your best option. Though the capability of photochromic sunglasses lenses is ideal for changing light conditions, they may not work behind the wheel and will not be as effective in reducing glare.
Whenever the lenses face Ultra violet rays, the molecules change to form bonds which make the lenses darker. When the light exposure decreases, the molecules then break the bonds and it transitions back again to clear. It does have a little bit longer for the lenses to turn back from dark to clear than it can for the lenses to darken as the breakage of the bond takes more energy than the formation of it. Many sports happen outdoors where light conditions alter because the individual moves from shady to bright areas.
Sunglasses Or Photochromic Lenses? You Decide
Designed in trendy colors, photochromic sun lenses also match fashion trends. No more outdated notions about yellowish photochromic lenses, reminding you of ageing grandparents!
- them for just about any sport with a changing environment such as for example cycling or mountain biking, for endurance sports like running, or sports when you can’t be hands-free, such as for example canoeing.
- Though photochromic lenses cost a lot more than clear eyeglass lenses, they offer the capability of reducing the need to carry a couple of prescription sunglasses with you everywhere you go.
- The colors between medium and dark tint can also differ to answer specific needs such as driving.
Unlike sunglasses, photochromic lenses are clear lenses that do more, automatically darkening when subjected to UV light. However, many people may also be interested in another pair of sun lenses for enhanced visual performance outdoors or when driving and behind the windshield of a car. For these wearers, Transitions® Performance sunwear offer an excellent alternative to conventional sunwear. Transitions Performance sunwear go from dark to even darker in UV light – adapting to optimize colour and darkness in changing light conditions.
Protect Your Eyes From Uv Light
Photochromic lenses, sometimes referred to as transition lenses, are eyeglass lenses that will turn dark in sunlight and be clear again when indoors. This is the result of chemical responses to the presence of ultraviolet light.
- 2) When behind the windshield of an automobile, Transitions® Drivewear lenses darken right into a copper color.
- glass, with the color-changing material distributed evenly through the entire lens thickness.
- For activities where the bright light may reflect back at you, for instance, activities in water or snow, prescription sunglasses with polarized lenses is a better fit.
Like non-prescription sunglasses, corrective lenses can be added to almost any design of frames you’d like. Whether want cat-eye frame, heart-shaped sunglasses, aviators or classic wayfarers, your lifestyle, your lens, no issue. These lenses contain proprietary dyes that undergo chemical changes and darken when subjected to UV light.
They can benefit from glasses that automatically change color in sunlight. Photochromic lenses are eyeglass lenses which are clear indoors and darken automatically when subjected to sunlight. Other terms sometimes useful for photochromic lenses include “light-adaptive lenses,” “light intelligent” and “variable tint lenses.”
Sunglasses might help prevent squinting, discomfort, and eye strain caused by the sun—but not all sunglasses are created equal. Explore the differences between polarized and photochromic lenses, and the advantages and disadvantages of each. Photochromic lenses are clear indoors, but a chemical reaction within the lens causes them to darken after about 30 seconds of contact with ultraviolet radiation from sunlight.
