What is the difference between Transition Xtractive Gray and Transition Gray?

Transition Xtractive Gray and Transition Signature Series Gray are photochromic lenses, which means they darken when exposed to UV light and return to a clear state indoors or in low-light conditions. However, there are some differences between Transition Xtractive Gray and Transition Gray lenses.

1. Darkness: Transition Xtractive Gray lenses are designed to provide a darker tint than Transition Signature Series Gray lenses. They offer extra darkening outdoors, even in hot conditions, making them suitable for people who spend a significant amount of time in bright sunlight or are exposed to intense UV light.
2. Activation: Both lenses activate and darken in response to UV light, but Transition Xtractive Gray lenses have a slightly different activation profile. They have a higher level of activation behind the windshield of a car, which means they darken to a greater extent while driving. Transition Gray lenses may not darken as much behind a windshield.
3. Indoor Clarity: When indoors or in low-light conditions, Transition Xtractive Gray lenses and Transition Gray lenses return to a clear state. However, Transition Xtractive Gray lenses may retain a slight tint indoors compared to Transition Gray lenses. The level of indoor clarity can vary depending on the specific lens technology and brand.
4. UV and Glare Protection: Both lens types provide UV protection, helping to block harmful UV rays. They also offer some level of glare reduction, helping to improve visual comfort in bright conditions. However, Transition Xtractive Gray lenses are designed to provide enhanced glare protection, making them particularly suitable for outdoor activities or environments with an intense glare, such as on water or snow.

It's worth noting that the specific characteristics and performance of photochromic lenses can vary depending on the brand and product line. Therefore, it is recommended to consult the manufacturer's specifications or talk to an eyewear professional to get detailed information about the specific features and benefits of Transition Xtractive Gray and Transition Gray lenses from a particular brand.