Laser-based medical systems provider Iridex Corp. of Mountain View, Calif., has announced the success of its MicroPulse laser therapy in surgery using an IQ 577 laser coupled with EndoProbe instrumentation. This is the first time that tissue-sparing laser therapy has been delivered through an intraocular fiber optic probe in a surgical setting, the company said. Endo-MicroPulse is effective in cases of very thin retinas because it preserves tissue rather than destroying it, as conventional laser therapy does. Dr. Sam Mansour, who performed the surgery at George Washington University School of Medicine and Health Sciences, is medical director of the Virginia Retina Center and clinical professor of ophthalmology at the university.