There is a store on ebay that does replacement lenses for Revo. The lenses are not quite as good as the originals, but they are good. Depending on the model, you simply order the color and style you want and send them your glasses and they replace the lenses and send them back. Only took a week or so. They offer some pretty cool colors and fair prices. I have 2 pairs of Revo 840's from the mid 80's, one of the lenses broke during a skiing wipe out but the frames are like brand new, so they sat in my glasses box for 25 years and I found that place on the bay.