Comparison of Keratometric Changes After Ab Interno Gel Stent Implantation, Glaucoma Drainage Devices and Trabeculectomy
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Kenan Bachour,1,2 Dominique Geoffrion,1– 3 Guillaume A Mullie,1,4,5 Younes Agoumi,1,2 Georges M Durr1,2 1Department of Ophthalmology, Université de Montréal, Montreal, Canada; 2Department of Ophthalmology, Centre Hospitalier de l’Université de Montréal, Montreal, Quebec, Canada; 3Faculty of Medicine, McGill University, Montreal, Quebec, Canada; 4Department of Ophthalmology and Visual Sciences, McGill University, Montreal, Quebec, Canada; 5St. Mary’s Hospital, Montreal, Quebec, CanadaCorrespondence: Kenan Bachour, Department of Ophthalmology, Université de Montréal, 2900 Bd Édouard-Montpetit, Montréal, Montreal, Quebec, QC H3T 1J4, Canada, Tel +1 514 677-9601, Email kenan.bachour@umontreal.ca Georges M Durr, Department of Ophthalmology, Université de Montréal, 1051 Rue Sanguinet, Montreal, Quebec, H2X 3E4, Canada, Email georgesdurr@gmail.comPurpose: To compare postoperative keratometric changes and surgically induced astigmatism (SIA) after Ab Interno Gel Stent Implantation (XEN), glaucoma drainage device (GDD), and trabeculectomy (TRAB). GDDs included Ahmed glaucoma valve (AGV) and Baerveldt glaucoma implant (BGI).Design: Prospective, interventional, longitudinal study.Participants and Methods: Fifty-one eyes with glaucoma undergoing glaucoma filtering surgery were recruited between November 2020 and May 2023. The groups consisted of 19 XEN implants (37%), 21 GDDs (41%) (2 AGVs, 19 BGIs), and 11 trabeculectomies (22%). Primary outcomes were SIA at 12 months postoperatively, measured by Pentacam (Scheimpflug imaging) and OPD-scan (topography). The arithmetic mean of SIA (M-SIA) and the centroid of SIA (C-SIA) were determined using vector analysis. Secondary outcomes included BCVA, IOP, number of meds, and complications.Results: At 12 months, C-SIA measured by tomography was similar across all groups (0.3 ± 1.0 D for XENs and GDDs and 0.4 ± 1.0 D for TRAB). Topography measurements demonstrated a C-SIA of 0.2 ± 0.9 D for XENs, 0.1 ± 0.9 D for GDD, and 0.6 ± 1.7 D for TRAB. TRAB showed a trend towards a higher proportion of eyes with > 1D of astigmatism (73%) compared to the XEN (27%) and GDD groups (48%, p = 0.159).Conclusion: SIA was similar across groups when measured by tomography, while topography measurements indicated a trend towards more SIA with TRAB. Mean cylinder values at 12 months were higher in the TRAB group.Keywords: glaucoma, surgically induced astigmatism, cornea, keratometric changes
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it