GKB Optic Technologies is a Rx Export Lab in India founded by GKB Opticals Ltd. and Essilor International. GKB Opticals Ltd. has been in the lens industry for more than 50 years. Essilor, the world leader in spectacle lenses, joined the brand in 2010 to form GKB Optic, a world-class infrastructure Rx and Digital Lab in Noida, India's Noida Special Economic Zone.
Single vision lenses come in a variety of materials, including polycarbonate, plastic, and high-index. A strong prescription can result in thicker, heavier glasses with standard plastic lenses. High-index lens materials, on the other hand, will reduce thickness, increasing comfort and improving the appearance of the lenses.