Hi everyone,
Please help me to understand this, thanks.
I just dispensed a beutiful Ic! Berlin (base curve 8) polarized polycarb sunglasses to my patient in a perfect conditions. Then one week later, he came back and show me there is a long crack on his polarized polycarb lenses. He told me that his polarized polycarb lenses just crack on his face when he biked down from the Grand Canyon trail in Arizona-88 degree high on the mountain down to 3 degree below the ground level.
He sweared up & down that he never drop them, the polarized polycarb lenses JUST CRACK BY THEMSELF on his face. So I have to re-do the lenses for him.
My questions are:
1. Are the polarized polycarb crack when temperature & latitude change so great?
2. What kind of material will be better for trail bikers beside Polarized Polycarb?
3. I did check with the lab, the polarized trivex is no available.
4. What should I do?
Thanks for your help. :angry:...
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