I've tried other computer glasses and this is the best I've worn. Positive: After daily use in the office, they don't show any scratches. I had another popular pair that had a deep dent the same day I opened the box, so that's a nice feature (real scratch resistance). They don't make the whole world appear yellow, but they make the whole world appear very blue. if you take them off before your eyes can adjust. In other words, it's not an overwhelming hue. However, my eyes feel much more rested after long hours at the computer. They only have a touch of magnification. I was prescribed +.50 bifocals, which are still too strong to be of any use to me, but the optometrist felt it was necessary to reduce eye strain. As it turned out, their blue light blocking and slight magnification was just what I needed. Also, I didn't have to adjust, no "okay, now I'm getting dizzy" phases - my eyes didn't have to get used to these glasses. Cons: price 70-80 dollars. But you know, I got a pair of specially coated, special material bifocals from an optometrist that cost over $400 that don't appear to be more expensive than these Gunnars, and they don't really help my eye strain and headaches like the Gunnars do. . . The price seems pretty fair to me.
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