Wondering..

[pezfaerie]

I put a pair of lenses in the Transitions "testing box" but put them front down back up and nothing happened, no color change. So I flip them over and *bam* color change. So it made me wonder if reg. Trans are like this is Xtra active on both surfaces?

[Jim Schafer]

Hello Pez
Transitions branded lenses are convex surface treated. Nothing on the concave side.

regards
Jim