ArticleJapanese journal of ophthalmology2026
Comparison of surgically induced astigmatism following PreserFlo MicroShunt implantation versus trabeculectomy in Japanese patients with glaucoma.
Article in Japanese journal of ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 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
2 citing papers in PubMed.
- A Case of Early PreserFlo MicroShunt Obstruction Following Presumed Inadvertent Ciliary Sulcus Implantation.Cureus · 2026Article
- Comparison of Surgically Induced Astigmatism After Glaucoma Filtering and Implant Procedures.Clinical ophthalmology (Auckland, N.Z.) · 2026Article
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
No grant is acknowledged in the PubMed record.
Abstract
purposeWe compared the magnitude of surgically induced astigmatism (SIA) following PreserFlo MicroShunt (PMS) implantation versus conventional trabeculectomy (Trab), with both procedures being performed with mitomycin C (MMC). STUDY
designRetrospective cohort study
methodsWe included 113 eyes of 113 patients who underwent standalone PMS surgery and 78 eyes of 78 patients who underwent standalone Trab, all with no previous history of glaucoma surgery. Corneal astigmatism was measured preoperatively and at 3 months postoperatively by use of an automated keratometer. The mean SIA (M-SIA) and centroid SIA (C-SIA) were calculated by use of a dedicated vector analysis tool. Preoperative and postoperative intraocular pressure (IOP) and visual acuity (VA) were compared by use of paired t tests. The Mann-Whitney U test was used to compare the M-SIA between the groups.
resultsPostoperatively, the IOP decreased from 20.9 to 11.5 mm Hg in the PMS group and from 20.6 to 9.3 mm Hg in the Trab group (P <0.001 for both). The C-SIA demonstrated an astigmatic shift toward the site of tube insertion in the PMS group and toward the scleral flap location in the Trab group. The M-SIA was significantly lower in the eyes treated with PMS than in those treated with Trab in the superonasal quadrant, but not in the superotemporal site. The VA remained stable in the PMS group, whereas a significant decline was observed in the Trab group.
conclusionsThe PMS is an effective surgical option for reducing IOP while minimizing SIA at 3 months postoperatively. By better preserving visual function, the PMS may contribute to improved vision and overall patient satisfaction with the surgical outcomes.
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.