Vision Rx Lab is the largest ophthalmic Rx lens manufacturer in Asia. In 1959 this company startedas GKB Rx Lens Pvt. Ltd. in Agra, India. Later it was shifted from Agra to Kolkata in 1969. In 2006 it became the joint venture of GKB and ESSILOR which provides organic and mineral ophthalmic lenses and world-class optometric solutions.