Re: polarchromic sunglasses
As an eye glass wearer that has the changing lenses I can tell you they do not stop changing in and out of the sunlight. I have two pair one about 4years old that I keep as a back up in case something happens to my everyday glasses. My eye doctor told me that with the increasing UV not to skimp on sunglasses . Make sure they block UVA and UVB. She said that due to the increase in UV cataracts are a major problem. Costa del Mar and Maui Jim are two major brands that she recommended. The nice thing about the lens changing is when the sun goes down you can still leave them on and protect your eyes.