via Lifehacker http://ift.tt/1E847KJ

While Gunnar glasses are marketed towards gamers, they can be effective at reducing eyestrain for anyone that spends their day staring at a screen. The problem is that they’re typically pretty expensive, and rarely go on sale. Today only though, Amazon’s got a variety of options marked down to a flat $40, which is basically as cheap as we ever see them. These prices will shoot back up at midnight PT though, so grab them while you can. [Gunnar Sale]

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