Transitions XTRActive lenses are designed to protect your eyes from the brightest lights. As with our Transitions GEN 8 lenses, they block 100% of UV light but they can get even darker. However, unlike other Transitions lenses, they activate behind your windshield, protecting your eyes from the glare of sunlight and car headlights, which makes them one of the best lens options for driving.
When photogenic lenses are exposed to UV light, trillions of photochromic molecules in the lens begin to change structure, causing the lenses to darken. Transitions’ exclusive and patented formulas are integrated into the surface of the lenses in order to create a smooth transition between clear and dark, ensuring the optimal amount of light reaches the eye, no matter the weather.
In 1990 Transitions Optical were the first company to introduce a plastic photo-chromic lens which allows the lens to adjust and adapt to the change of light and to this day have continued this ground breaking innovation.