University of Iowa Health Care

Ophthalmology and Visual Sciences

Iowa Glaucoma Curriculum

Supplementary Material


Chapter 48

MIGS: Minimally Invasive Glaucoma Surgery by Drs. Austin R. Fox, MD, Tyler B. Risma, MD, Jason P. Kam, MD, Daniel I. Bettis, MD

Dr. Shakeel Shareef at the University of Rochester has created a website devoted to gonioscopy related to angle surgery (http://www.anglesurgery.org/). I highly recommend it to anyone interested in transitioning to MIGs surgeries.


Cases from

Refractory Primary Open-Angle Glaucoma Treated with Ab Interno Canaloplasty (ABiC): A 59-year-old male presented with a history of Granulomatosis with Polyangiitis (GPA) - formerly known as Wegener's Granulomatosis, medically-uncontrolled primary open angle glaucoma (POAG), and pathologic myopia.

Secondary Open-Angle Glaucoma Treated with Gonioscopy-Assisted Transluminal Trabeculotomy (GATT). A 20-year-old female was referred for management of secondary open-angle glaucoma. 3 years prior she had been diagnosed with an unusual vasoproliferative tumor in her left eye. Shortly after treatment with intravitreal steroids and photodynamic therapy, her IOP spiked to 59 mm Hg.