Mazzo is the operating partner for Versant Ventures. As Versant’s operating partner, Mazzo’s focus is on patient needs, new technology advancements and investment opportunities in the healthcare field worldwide. Mazzo is also the executive chairman and CEO for AcuFocus. AcuFocus specializes in presbyopia correction and is known for its revolutionary KAMRA inlay. He is also the executive chairman for Neurotech. Neurotech Pharmaceuticals is a biotechnology company developing sight-saving therapies for retinal diseases. Previously, Mazzo assumed the position of senior vice president, Abbott Laboratories and president, Abbott Medical Optics following the company’s February 2009 acquisition by Abbott. Prior to AMO running the ophthalmic division for Abbott, he was chairman and CEO of Advanced Medical Optics, Inc., a position he assumed following the company’s 2002 spin-off from Allergan. Additionally, he serves on the board of directors for Microsemi Corporation, Aerie Pharmaceuticals and Glaukos Corporation.