Internationally recognized expert in Cataract Surgery, LASIK, PRK, and Crosslinking for Keratoconus. William Trattler, MD served as President of the American-European Congress of Ophthalmic Surgery (AECOS) in 2019 & 2020. Dr. Trattler, has served on the Executive Board of the International Society of Refractive Surgery (ISRS) from 2011 through 2019 as well as the Refractive Surgery Alliance (RSA) from 2015 to present. Dr Trattler served as the Program Director of the Advanced Refractive Congress (ARC) from 2016- 2019. Dr Trattler has written hundreds of articles (both peer and non-peer reviewed) focused on crosslinking for keratoconus, cataract surgery, multifocal IOLs, LASIK, laser vision correction, EVO ICL, and dry eye.