Italy’s Luxottica and France’s Essilor have agreed a 46 billion euro merger to create a global powerhouse in the eyewear industry with annual revenue of more than 15 billion euros, they said in a statement on Monday. The deal, one of Europe’s largest cross-border tie-ups, brings together Luxottica, the world’s top spectacles maker with brands such as Oakley and Ray-Ban, with Essilor, the world’s leading manufacturer of ophthalmic lenses.