How do Transitions XTRActive lenses perform in hot temperatures?
Transitions XTRActive lenses are the darkest everyday lenses ever developed by Transitions Optical, including in hot temperatures. At 95° F (35° C), Transitions XTRActive lenses have a light transmission of only 20%, which makes them significantly darker than Transitions VI lenses. However, the actual performance attributes (especially the level of darkness and speed of deactivation) of all photochromic lenses are limited by the laws of chemistry, and are normally affected somewhat by extreme hot and cold temperatures.
