Observational studyOphthalmology2021
Trends in Glaucoma Surgeries Performed by Glaucoma Subspecialists versus Nonsubspecialists on Medicare Beneficiaries from 2008 through 2016.
Observational study in Ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06174324 (Visual Field Progression and RNFL Change After PreserFlo MicroShunt Implantation - a Prospective Cohort Study at the Ophthalmology Department Klinikum Klagenfurt), which is not on this map. Cited by 36 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Visual Field Progression and RNFL Change After PreserFlo MicroShunt Implantation - a Prospective Cohort Study at the Ophthalmology Department Klinikum Klagenfurt
Who cites it
36 citing papers in PubMed.
- A multicenter prospective comparative study evaluating cataract surgery and endoscopic cyclophotocoagulation either with or without iStent inject implantation in Brazilian patients with glaucoma.International ophthalmology · 2023Trial
- Canaloplasty and Trabeculotomy Combined with Phacoemulsification for Glaucoma: 12-Month Results of the GEMINI Study.Clinical ophthalmology (Auckland, N.Z.) · 2022Trial
- Two-years efficacy and safety of bleb forming devices in uncontrolled glaucoma.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026Article
- Microneedle technology in the treatment of ocular diseases: Advances and applications.Asian journal of pharmaceutical sciences · 2026Review
- Prospective Pilot Study of Sustained Release Bimatoprost Implant with SpyGlass Intraocular Lens: 3-Year Results.Ophthalmology and therapy · 2026Article
- Review
- The Efficacy and Safety of Trabeculectomy after Failed Primary Glaucoma Drainage Devices.Ophthalmology and therapy · 2025Article
- Surgical Outcomes of Gonioscopy-Assisted Transluminal Trabeculotomy (GATT) in Primary and Secondary Open- and Closed-Angle Glaucoma.Diagnostics (Basel, Switzerland) · 2025Article
- Clinical Practice Preferences for Glaucoma Surgery in Japan in 2024.Journal of clinical medicine · 2025Article
- Risk factors for hyphema following goniotomy or trabecular bypass stent placement combined with phacoemulsification.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025Article
- Climate-Conscious Glaucoma Care: Strategies to Minimize the Environmental Impact in the Operating Room and in the Clinic.Journal of ophthalmology · 2025Review
- Trends in Glaucoma Fellowship Surgical Experience.Clinical ophthalmology (Auckland, N.Z.) · 2025Article
- A Scoping Review of Rho Kinase Inhibitors and their Role in Glaucoma Treatment.Current medicinal chemistry · 2025Article
- Surgical Synergy in Primary Open-Angle Glaucoma: Assessing Safety and Efficacy of Hydrus, iStent, and Gonioscopy-Assisted Transluminal Trabeculotomy in Glaucoma Management.Journal of clinical medicine · 2024Review
- Article
- Beyond PhacoTrainer: Deep Learning for Enhanced Trabecular Meshwork Detection in MIGS Videos.Translational vision science & technology · 2024Article
- Is the Advent of New Surgical Procedures Changing the Baseline Features of Patients Undergoing First-Time Glaucoma Surgery?Journal of clinical medicine · 2024Article
- Rho Kinase Inhibitors: Strategies in Glaucoma Treatment in Older Adults.Drugs & aging · 2024Review
- Increases in Medicare Spending and Use after Private Equity Acquisition of Retina Practices.Ophthalmology · 2024Article
- The gonio scratch study: methodology of a multicenter clinical trial establishing a new minimally invasive glaucoma surgery.Nagoya journal of medical science · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
purposeTo characterize the use of laser and incisional glaucoma surgeries among Medicare beneficiaries from 2008 through 2016 and to compare the use of these surgeries by glaucoma subspecialists versus nonsubspecialists.
designRetrospective, observational analysis.
participantsMedicare beneficiaries (n = 1 468 035) undergoing ≥1 laser or incisional glaucoma surgery procedure during 2008 through 2016.
methodsClaims data from a 20% sample of enrollees in fee-for-service Medicare throughout the United States were analyzed to identify all laser and incisional glaucoma surgeries performed from 2008 through 2016. We assessed use of traditional incisional glaucoma surgery techniques (trabeculectomy and glaucoma drainage implant [GDI] procedure) and microinvasive glaucoma surgery (MIGS). Enrollee and procedure counts were multiplied by 5 to estimate use throughout all of Medicare. Linear regression was used to compare trends in use of glaucoma surgeries between ophthalmologists who could be characterized as glaucoma subspecialists versus nonsubspecialists.
main outcome measuresNumbers of laser and incisional glaucoma surgeries performed overall and stratified by glaucoma subspecialist status.
resultsThe number of Medicare beneficiaries undergoing any glaucoma therapeutic procedure increased by 10.6%, from 218 375 in 2008 to 241 565 in 2016. The total number of traditional incisional glaucoma surgeries decreased by 11.7%, from 37 225 to 32 885 (P = 0.02). The total number of MIGS procedures increased by 426% from 13 705 in 2012 (the first year MIGS codes were available) to 58 345 in 2016 (P = 0.001). Throughout the study period, glaucoma subspecialists performed most of the trabeculectomies (76.7% in 2008, 83.1% in 2016) and GDI procedures (77.7% in 2008, 80.6% in 2016). Many MIGS procedures were performed by nonsubspecialists. The proportions of endocyclophotocoagulations, iStent (Glaukos; San Clemente, CA) insertions, goniotomies, and canaloplasties performed by glaucoma subspecialists in 2016 were 22.0%, 25.2%, 56.9%, and 62.8%, respectively.
conclusionsFrom 2008 through 2016, a large shift in practice from traditional incisional glaucoma surgeries to MIGS procedures was observed. Although glaucoma subspecialists continue to perform most traditional incisional glaucoma surgeries, many MIGS procedures are performed by nonsubspecialists. These results highlight the importance of training residents in performing MIGS procedures and managing these patients perioperatively. Future studies should explore the impact of this shift in care on outcomes and costs.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.