Organic Lens Manufacturing (OLM), part of the Essilor Group, has been in operation in Ennis since 1991, producing semi-finished ophthalmic lenses, for the European market. The world’s leading ophthalmic optics company, designs, manufactures and markets a wide range of lenses to improve and protect eyesight. Its flagship brands are Variluxå, Crizalå , Transitionså , EyezenTM, Xperioå , Foster Grantå , BolonTM and Costaå.