Average Product .. !
I found that the glasses change the light color into yellowish.
This can be achieved by using a screen lighting software. The one I'm using is f.lux, its available for Mac, Windows, Linux and Android. The only issue is that this software is not available for gaming consoles like Xbox and PS3. But using such glasses which change the color defeats the purpose of the gaming console's GPU. They exactly do what they are designed for. The yellow tints provides great relaxation to the eyes and one can see the difference right after using them.