I purchased these at a Zoff store and used them once for a few minutes before storing them. They are in very good condition. I have another pair, so I'm selling these. They're recommended for people who frequently use smartphones and computers, as they help reduce eye strain. They do not have prescription lenses. Stylish gold-framed glasses with blue light cut function. - Brand: Zoff - Model Name: ZY202P01-56E1 - Color: Gold - Function: Blue light cut (approx. 50%)