Ecology is on everyone’s minds (or almost) and imposes the modification of our way of producing and consuming. No economic sector has escaped issues concerning sustainable development and social responsibility. The optical-eyewear sector is beginning to confront this great movement transforming a world on verge of a climate crisis. This guide reveals how glasses are beginning to see green on the economic, esthetic, and industrial level and with a critical eye, lists all the brands and entrepreneurs around the world who approach ecology from different angles. Diving into the heart of a progressive evolution, with men and women who feel passionate about glasses and are committed to seeing the world in green. A unique, practical, and indispensable guide. Dominique CUVILLIER, a specialist in decoding tendencies and analyzing markets, is the publishing director of the digital magazine MO Fashion Eyewear, dedicated to trends in optical eyewear. He teaches marketing and communication as the ISLM-Sup de Luxe Paris and is the author of numerous works : Capter les tendances, Dunod editions 2012, Pour un autre marketing, éditions Maxima 2014, Le triomphe du luxe cool, Maxima editions 2019, Le XXIe siècle, enfin ! Trendmark Publishing 2020.