
I have 4 pairs of this brand but this yellow lens is something. My eyes get very tired from too much blue computer light, I think a migraine is like a headache. My monitors are set to low blue light, but I still need these glasses or my head hurts. I bought a model with amber lenses for night driving only, they block harsh blue light from cars at night, they work fantastic. The car has auto-dimming mirrors, but they're great for oncoming traffic on long motorway journeys. So why only 4 stars? The yellow lens changes the background color well (when looking at a white page it appears yellow, when looking at the default Windows 7 wallpaper, which is blue, it appears green). I use the clear glasses I have to work on the computer so I can see what I'm doing. When you look at MS Excel with yellow lenses and you have cells highlighted in yellow, you can't tell which cells are highlighted because there is so much yellow. I generally wear amber lenses in my car when driving at night and clear glasses with lenses at my computer desk. I no longer have migraines and eyestrain, I am very happy with all the pairs I have bought as they work very well for the way I use them.

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