When I did not have glasses, I had red eyes that were burning up in the morning, sometimes headache, what convinced me to buy these glasses is that I hold in my eyes, I want to have a good view as long as possible, these are effective ppk ... They protègents largely harmful rays emitted by the screen (so imagine many). Indeed, I was septic tell me a simple pair of glasses could have as much positive, but yes, it's true (for me anyway). The price is high, yes, I almost did not take because of it but the view is priceless.
