Transitions

[captpackrat]

I made a useful discovery today.  Apparently the process that makes my Transitions lenses get darker is exothermic (and the lightening process is endothermic).  The glasses get darker faster if the lenses are cold, while they stay dark for a long time after going indoors if they are still cold. 

If I warm the lenses under hot water, they'll lighten much faster than if I left them alone.

Comments

[altivo.livejournal.com]

I have Transitions lenses and have noticed the same thing. Glad you've confirmed that I didn't imagine it. It makes them work really well against snow glare, but not so well on hot summer days. I'll have to test in summer (if it ever comes back) by chilling them before exposing to the sun.