![How can my glasses change from transparent, when I'm inside, to dark when I go outdoors? | HowStuffWorks How can my glasses change from transparent, when I'm inside, to dark when I go outdoors? | HowStuffWorks](https://cdn.hswstatic.com/gif/How-to-activate-transition-lenses-without-sun.jpg)
How can my glasses change from transparent, when I'm inside, to dark when I go outdoors? | HowStuffWorks
Mings Optical - Protection and Style combined! Protection is never dull with XTRActive Transition lenses. Transition XTRActive lenses block 100% UV and blue light. Protects eyes from glare, sunlight and car headlights.
![My glasses with transitions lenses after leaving them on a windowsill under some blinds : r/mildlyinteresting My glasses with transitions lenses after leaving them on a windowsill under some blinds : r/mildlyinteresting](https://i.redd.it/ump2wd39ptu01.jpg)