Nash Crystals 005 51-19-140 Most plastic glasses are made of zyl (also called zylonite, acetate and cellulose acetate) or propionate. Other materials used in plastic frames include polyamide, nylon, polycarbonate, carbon and Optyl.For a better visual results add VARILUX X  Series ,Eyezen digital single vision lenses,Transitions lens color,crizal Shappire:

EYEZEN DIGITAL SINGLE VISION LENSES SEEING IS RELIEVING,Between computers, tablets, and smartphones, we need help from our glasses more than ever before. All that screen time can be hard on your eyes and may cause digital eye strain. Eyezen^® enhanced single vision lenses are more than just ordinary glasses, they provide sharper vision than ordinary single vision lenses and are available to everyone—whether you have a prescription or just want a pair of computer glasses.

DESIGNED FOR THE WAY YOU SEE THE WORLD,Eyezen enhanced single vision lenses are designed for the way you see the world, reducing strain from viewing digital devices. They perform better than computer glasses and filter Harmful Blue Light, helping to keep your eyes protected and comfortable, even on your most digital days.