For those who prefer the versatility that a second mirror adds, then you may want to consider the all glass Volk G-2 trabeculum. It features the same 1.5x magnification as the G-1 but offers two opposing mirrors angled at 60° and 64° respectively. Available in standard (flange) or NF (no-flange/no-fluid) design. Developed with George Baerveldt, MD.