 This relationship was expanded in 2001 with a second OEM arrangement to design and supply a Selective Laser Trabeculoplasty (SLT) system for treatment of Glaucoma.In 2001, Ellex also underwent an IPO and listing on the Australian Stock Exchange.However, within 18 months of listing the ophthalmic laser industry experienced a downturn and Ellex was exposed to the fortunes of its major OEM partners.