EssilorLuxottica SA is an Italian-French vertically integrated multinational corporation based in Paris and founded on 1 October 2018 from the merger of the Italian Luxottica with the French Essilor. The eyewear-focused group designs, produces and markets ophthalmic lenses, optical equipment, prescription glasses and sunglasses. EssilorLuxottica's merger agreement was that Essilor would acquire Luxottica, but Luxottica's leadership would gain seats in leadership and on the board of directors, including Luxottica founder Leonardo Del Vecchio becoming executive chairman. After a public feud between the previous companies' leadership, Del Vecchio was able to win the backing of shareholders and ousted Essilor CEO Hubert Sagnières from the company, appointing his choice of Francesco Milleri as the new CEO. Upon the merger, the company became the largest player in the eyewear industry, with Essilor contributing numerous proprietary lens technologies as well as the brands Foster Grant and Costa Del Mar. Wikipedia