ReviewCurrent opinion in ophthalmology2020
Circumferential canal surgery: a brief history.
Review in Current opinion in ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
15 citing papers in PubMed.
- Canaloplasty and Trabeculotomy Combined with Phacoemulsification for Glaucoma: 12-Month Results of the GEMINI Study.Clinical ophthalmology (Auckland, N.Z.) · 2022Trial
- Medicare Payment to Service Volume Elasticities for Glaucoma Procedures From 2013 to 2021.Journal of ophthalmology · 2026Article
- Ten-Year Results After Canaloplasty and Phacocanaloplasty.Journal of clinical medicine · 2025Article
- Comparative effectiveness and safety of GATT with or without ABiC in patients with open-angle glaucoma.Frontiers in medicine · 2025Article
- Revolution in glaucoma treatment: a review elucidating canaloplasty and gonioscopy-assisted transluminal trabeculotomy as modern surgical alternatives.Frontiers in medicine · 2025Review
- Real-World Outcomes of Canaloplasty and Trabeculotomy Combined with Cataract Surgery in Eyes with All Stages of Open-Angle Glaucoma.Clinical ophthalmology (Auckland, N.Z.) · 2023Article
- Short-Term Efficacy of Combined ab Interno Canaloplasty and Trabeculotomy in Pseudophakic Eyes with Open-Angle Glaucoma.Clinical ophthalmology (Auckland, N.Z.) · 2022Article
- Microinvasive Glaucoma Surgery: A Review of Schlemm's Canal-Based Procedures.Clinical ophthalmology (Auckland, N.Z.) · 2021Review
- Canaloplasty and Trabeculotomy Combined with Phacoemulsification in Open-Angle Glaucoma: Interim Results from the GEMINI Study.Clinical ophthalmology (Auckland, N.Z.) · 2021Article
- Combined Gonioscopy-Assisted Transluminal Trabeculotomy (GATT) with Ab Interno Canaloplasty (ABiC) in Conjunction with Phacoemulsification: 12-Month Outcomes.Clinical ophthalmology (Auckland, N.Z.) · 2020Article
- Clinical Results of Ab Interno Canaloplasty in Patients with Open-Angle Glaucoma.Clinical ophthalmology (Auckland, N.Z.) · 2020Article
- Circumferential Viscodilation Ab Interno Combined with Phacoemulsification for Treatment of Open-Angle Glaucoma: 12-Month Outcomes.Clinical ophthalmology (Auckland, N.Z.) · 2020Article
- Canaloplasty in the spotlight: surgical alternatives and future perspectives.Romanian journal of ophthalmologyReview
- Ab-interno Trabeculotomy Procedures: A Review.Journal of current ophthalmologyReview
- Minimally Invasive Glaucoma Surgery-to Remove or Preserve the Trabecular Meshwork: That is the Question?Journal of current glaucoma practiceArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purpose of reviewMost microinvasive glaucoma surgery (MIGS) procedures bypass outflow resistance residing proximally in the trabecular meshwork and inner wall of Schlemm's canal. A novel procedure combining trabeculotomy with viscodilation adds to this by also addressing distal resistance of the canal and collector channel ostia. This review examines the development and evidence for both trabeculotomy and canaloplasty separately and the combination in a single procedure. RECENT
findingsRecent aqueous angiography studies have confirmed the segmental nature of outflow through Schlemm's canal highlighting the need to address distal outflow pathway resistance. Combined trabeculotomy and viscodilation ab interno is a novel approach with a new purpose-designed device (OMNI Surgical System) becoming available to surgeons in early 2018. Recent results as both a standalone and combined with cataract procedure demonstrate significant intraocular pressure reductions with an average 41% reduction from baseline in the pseudophakic group. SUMMARY: Targeting both distal as well as proximal points of outflow resistance in the conventional pathway may prove to be a highly efficacious MIGS modality. Additional large prospective studies are currently ongoing to confirm these preliminary results.
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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.