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Anonymous Poster

"Transitions" lenses

02/29/2008 2:53 PM

Hello all!

Does anyone know why the "Transitions" lenses in my glasses will get darker faster in cold weather than they will in hot weather?

Cal
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ozzb
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#1

Re: "Transitions" lenses

02/29/2008 4:17 PM

UV light cause lens to darken. Less humidity in the air during cold weather. As humidity decrease UV light levels increase. Glasses get darker faster.

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vishmayor
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#2
In reply to #1

Re: "Transitions" lenses

03/01/2008 11:17 AM

I have a pair of glasses, with possibly one of the best wellknown brand (Varilux comfort) transition lenses that do not transition any more. Does anybody know why?

vshwn7@aol.com
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The_curious_one
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#3
In reply to #1

Re: "Transitions" lenses

03/01/2008 12:03 PM

I had a set of transition glasses when I was in University. The problem that I noticed was when coming into a warm building it took a long time for the glass to lighten up. I live in cold country where it may get as cold as 40 below (40 below is the same in C or F) but it would take several minutes after entering a warm building for the glasses to lighten up.

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Anonymous Poster
#4

Re: "Transitions" lenses

03/04/2008 9:20 AM

Wow! I would never have thought humidity would have any affect!

Thanks, Ozzb!

And Curious, yes, I have the same complaint. When entering a dimly-lit building like my garage, I am almost blind for a few minutes! Makes finding the right wrench difficult!
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