These are Zoff glasses I purchased 6.7 years ago. They have prescription lenses, but I bought them a long time ago, so I've forgotten the numbers. (My current vision with contacts is -3.75, and these glasses make things slightly difficult to see. I probably bought them when my contact lens prescription was around -2.75.) You could either go to Zoff to have the lenses replaced, or you could remove the lenses and use them as fashion glasses. Please feel free to ask if you have any questions. Thank you! - Brand: Zoff - Frame Shape: Round - Frame Color: Gold - Lens Shape: Crown Pant Color: Gold系 (Gold-toned) Frame Material: Metal Stains, tears, odors, etc.: None