I'm not sure of the details as I purchased these 4-5 years ago, but the model number suggests they cut blue light by 25%. There is no prescription. For reference, I've included a page I found by searching the model number. They do have a tint, but I feel it's very light. Perceptions vary, so please judge from the photos before purchasing. I will ship via either Rakuraku Mercari or Yu-Yu Mercari.