I work on a computer at minimum 8 hours a Day and I was so tired and unfocused before I bought my filter glasses. Now I'm awake, focused, more attentive to details, I sleep better and I SEE clearer. Best buy by a mile.
These are quality glasses! I bought mine to use while working in front of the computer late evenings. I find that it helps relaxing my eyes before bedtime, and ensuring me falling asleep faster. Also, they look really good too!