Delayed Spontaneous Hyphemas After Ab Interno Trabeculectomy Surgery for Glaucoma

Faazil Kassam, MD; Ann C. Stechschulte, MD; Michael C. Stiles, MD; Ralf Buhrmann, MDCM, PhD; Karim F. Damji, MD, MBA


J Glaucoma. 2014;23(9):660-661. 

In This Article


The ab interno trabeculectomy, also commonly known as the Trabectome system, is a novel surgical approach to lowering intraocular pressure (IOP) in primary open-angle glaucoma. It is a microelectrosurgical device that removes a strip of trabecular meshwork and inner wall of the Schlemm canal to improve aqueous outflow.[1,2] One of the main known complications is hyphema secondary to intraoperative blood reflux, but this typically clears within days postoperatively.[1] We report 5 cases from multiple centers of delayed hyphemas that occurred several months after uncomplicated ab interno trabeculectomy procedures.