“…5 Tube exposure rates have been reported to range from 1.8% to 25%. [8][9][10] In the Tube Versus Trabeculectomy study, despite The 3 patients in this case series who had AGV M4 explantations due to plate or tube exposures had predisposing conditions: uveitis with prolonged use of topical steroids, a phthisical eye in a Hispanic patient with uncontrolled diabetes and multiple cardiovascular problems, and NVG requiring multiple intraocular surgeries with inferior positioning of the implant. In prior studies, risk factors for tube exposure included Hispanic ethnicity, NVG, prior trabeculectomy, multiple prior intraocular surgeries, and inferiorly placed implants.…”