RECOMMENDED: Made by Essilor, the world leader in eyeglass lenses. Trivex takes tint better than polycarbonate lenses, and has a higher ABBE value, leading to better clarity and less distortion than polycarbonate lenses. Essilor is the leading lens maker in the world, and all of the Essilor lenses we sell are made in a U.S. laboratory. We are able to offer these at a great price point. This lens is a good choice for corrections up to +/-6.00, and it is available with a variety of options such as Transitions, UV protection, sunglasses or fashion tint, standard Anti-Reflective coating, and the top-quality Crizal Alize and Crizal Avance coatings. All of our lenses come with our Perfect Lenses Guarantee.