Apparently they don’t work so well in high temperatures, perhaps they’ve been impacted by high temps recently?
otherwise, ask an optician that sells them (Boots do I think). They may just be knackered I guess, are they older than 17 months. They don‘t have an infinite lifetime
They do wear out, typically the life span is about 3 years and they don't work as well in hotter temperatures. I have a pair which are 8 years old and they do still work, just about but not as well as when new.
Also as they wear out they take on a Yellowish hue when clear.
I'd be taking them back to the Oakley shop.
You're not looking at a clear lens are you?
No only got the one lens with them and it was always photochromic
I've got some third party photochromic lenses for my Oakleys. I'll have to check to see if they still work. I've had them for a good few years. I didn't know there was a shelf life.
Did Oakley carry a lifetime warranty? Not that their new owners would honour it, mind...