Transitions™ Lenses FAQ

Transitions Signature Gen 8™

Our new generation of lenses equipped with GEN 8 breakthrough technology is for you!

Always pushing boundaries, Transitions challenged its research team to develop a light intelligent photochromic lens that was darker outdoors, clear indoors, with improved reaction and fade back speeds, all without compromising on protection and quality.

The result of years of research and in-depth scientific studies, Transitions® Signature® GEN 8™ is the first light intelligent photochromic lens with a revolutionary nano-composite technology that pushes photochromic performance and offers optimum vision, comfort, and protection all day long.

transitions lenses faq

Frequently Asked Questions:

Do Transitions lenses protect against UV rays?

Yes. Transitions lenses block 100% of both UVA and UVB rays.

Do Transitions lenses reduce glare?

Yes. Transitions lenses react quickly to changing light and darken outside in bright sunlight. As light conditions change, the level of tint adjusts to provide the right tint at the right time. This convenient protection against glare is automatic.

Can I use Transitions lenses like sunglasses?

Outdoors, Transitions lenses automatically darken depending upon the amount of UV radiation present. The brighter the sun, the darker Transitions lenses get. So, they help enhance the quality of your vision by reducing the sun’s glare in different light conditions – on bright sunny days, on cloudy days and everything in between.

Transitions lenses are a great everyday solution for outdoor use, but there will always be times when a second pair of sunwear is beneficial. For instance, since extremely high temperatures can affect lens performance, Transitions lenses may not always get as dark as sunglasses. Also, since they are activated by UV exposure, most Transitions lenses don’t work behind the windshield of a car (your windshield actually blocks UV rays).

How do Transitions lenses work?

Transitions lenses contain special patented photochromic dyes that cause the lens to activate, or darken, when exposed to ultraviolet rays from sunlight. When the UV light diminishes, the lenses fade back. As light conditions change, the level of tint adjusts, offering the right tint at the right time. It’s important to note that the UV radiation blockage remains constant. Transitions lenses provide automatic protection from UV radiation in both the clear and darkened states and represent a truly superior technology.

How fast do Transitions lenses work?

Transitions lenses begin to darken the moment they are exposed to UV light. The greater the intensity of UV radiation, the darker the lenses become. The moment UV rays are no longer present, the lenses begin to fade back. In short, Transitions lenses quickly darken when you go outdoors, and fade back fast when you return indoors. Most wearers report the adjustment happens so smoothly that they are unaware of it since the lenses allow you to seamlessly go from low light to bright light and everything in between.

The temperature impacts the rapidity of shade changes in photochromic lenses. During extreme heat, they may not achieve full darkness and in colder temperatures, they might take extra time to return to a clear state.

Molecules move slower in the cold so the delay in shade shift during winter weather is due to the slower shape-changing of the coating’s molecules.

Photochromic lenses adjust to your surroundings relatively quickly, though the slight delay can be bothersome. The time it takes lenses to change shade depends on temperature, brand, age, and amount of UV exposure.

Normally, it takes the lenses about 30 seconds to darken and 5 minutes or less to return to their clear state once indoors. If you go back and forth between outdoor and indoor environments throughout the day and require rapid change, photochromic lenses might not be for you.

Transition lenses rarely have any problems. However, you might encounter some issues in very niche situations. Since transition sunglasses work depending on the amount of light in your surroundings, they don’t shift or change as quickly when you’re inside of a car due to your car’s windshield absorbing most natural light.

For more information you can always reach out to Eyelation customer service at


Sources: Transitions™ Lenses Signature Gen 8 marketing materials