I spend most of my time these days with my face in a computer screen and while my vision is still good I have been getting blurry eyes from the fatigue. These are very lightweight and fit very comfortably. No headaches yet. For the price point, I don't expect these to last forever but they are cheap enough to replace when needed. I'm still searching for sturdier frames of the same style and colours for a more permanent solution. Love the colours of these so much!