When in contact with UV light, the photochromic particles are activated in 20 to 30 seconds. If you're not sure, cover one of the lenses with your hand, then put the sunglasses on, wait 20 to 30 seconds and check the difference between the activated and non-activated lens.
How can you tell if glasses are fake?
Luxottica recommends looking at their frames from the top to make sure they are symmetrical. Most quality brands usually etch their company name or brand initials in the lenses. Try scratching these off with your fingernails. If it easily comes off, it's fake.7 Jun 2019
Why do my transition lenses not get dark?
Temperature affects how Transitions change. When they're hot (like in the summer), the lenses will change slower and won't get as dark. When Transition lenses do wear out, they will take on a yellowish tinge when they're clear. They will no longer get as dark at that point.
How can you tell if a lens is photochromic?
If you're not sure, cover one of the lenses with your hand, then put the sunglasses on, wait 20 to 30 seconds and check the difference between the activated and non-activated lens.
Why should I register my transition lenses?
Registering your lenses is not a requirement for warranty purposes, but by doing so, you'll get informed about eye health topics, caring for your lenses, and the latest developments in vision solutions. We'll even remind you when you're due for your next eye exam.
Do transition lenses have a warranty?
TRANSITIONS lenses have one-time, 1-year warranties against scratches because they automatically come with anti-scratch coatings.