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3

I won't discuss the aspects that the other two answers have covered well. I am very near-sighted. For my non-sunglasses, I have what are called "progressives". I think this is what you are calling bi-focal, multi-focal. For my sunglasses, I skipped the progressive feature, which I don't find very useful anyway. Outdoors, I am focused on distance almost ...


4

I'm an extremely nearsighted person who has trouble with contacts and spends a whole lot of time being active outdoors. As a result, I've done a lot of investigating into prescription sunglasses, and tested several pairs. The biggest difference between sunglasses and regular glasses is that sunglasses need to block out a larger area than a regular glasses ...


4

I like the idea of glasses that change from sunglasses to indoor Photochromic lenses are a lot less useful than most people think when they hear about the concept. The main problem is that the change takes time - about a minute to darken and nearly five minutes to un-darken. That makes them basically useless for things like tunnels. Another problem is that ...



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