Can MR-7 lens be used as the lens of rimless glasses? Who is better to make rimless glasses with this material or pc lens?

First of all, thank you for this question, and let me know MR-7, a material I am not familiar with. You should make it frameless. If the degree is less than 6.00, PC should be chosen, because PC is mostly used in industrial goggles, polarized lenses and sports lenses, and its refractive index is 1.59 1. Its advantages are light weight and density of 65438. Disadvantages: low surface hardness, easy to scratch. (You can choose a PC with scratch-resistant film on the surface to make up for this shortcoming of PC. ) MR-7 is mainly used in the lens of 1.67, with the same magnification and a little thinner than PC. I hope my explanation will help you. It's late. I'm going to bed.