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for Quality Eye Care without any external financial support. Authors and reviewers of the guidelines are volunteers and do not receive any financial compensation for their contributions to the documents. The guidelines are externally reviewed by experts and stakeholders before publication.

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Purpose To assess surgical practice patterns among the American Glaucoma Society (AGS) membership. Methods An anonymous online survey evaluating the use of glaucoma surgeries in various clinical settings was redistributed to AGS members. Survey responses were compared with prior results from 1996, 2002, and 2008 to determine shifts in surgical practice patterns. Questions were added to assess the preferred approach to primary incisional glaucoma surgery and phacoemulsification combined with glaucoma surgery. Results A total of 252 of 1,091 (23%) subscribers to the AGS-net participated in the survey. Percentage use (mean ± SD) of trabeculectomy with mitomycin C (MMC), glaucoma drainage device (GDD), and minimally-invasive glaucoma surgery (MIGS) as an initial surgery in patients with primary open angle glaucoma (POAG) was 59% ± 30%, 23% ± 23%, and 14% ± 20%, respectively. Phacoemulsification cataract extraction alone was the preferred surgical approach in 44% ± 32% of patients with POAG and visually significant cataract, and phacoemulsification cataract extraction was combined with trabeculectomy with MMC in 24% ± 23%, with MIGS in 22% ± 27%, and with GDD in 9% ± 14%. While trabeculectomy was selected most frequently to surgically manage glaucoma in 8 of 8 clinical settings in 1996, GDD was preferred in 7 of 8 clinical settings in 2016. Conclusions The use of GDD has increased and that of trabeculectomy has concurrently decreased over the past 2 decades. Trabeculectomy with MMC is the most popular primary incisional surgery when performed alone or in combination with phacoemulsification cataract extraction. Surgeons frequently manage coexistent cataract and glaucoma with cataract extraction alone, rather than as a combined cataract and glaucoma procedure.