{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T18:07:33Z","timestamp":1788977253448,"version":"build-2803163510"},"reference-count":24,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2024,9,9]],"date-time":"2024-09-09T00:00:00Z","timestamp":1725840000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Open Access Publication Fund of the University of Muenster"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Introduction: Glaucoma, one leading cause of irreversible vision loss worldwide, is primarily caused by elevated intraocular pressure (IOP). Recently, minimally invasive glaucoma surgeries (MIGSs) have become popular due to their shorter surgical times, tissue-sparing nature, and faster recovery. One such MIGS, the Hydrus\u00ae nickel\u2013titanium alloy Microstent, helps lower IOP by improving aqueous humor outflow. The NIDEK GS-1 automated 360\u00b0 gonioscope provides advanced imaging of the chamber angle for evaluation and documentation. The aim of this study was to test automated 360\u00b0 gonioscopy for the detection of postoperative positional variations after Hydrus\u00ae Microstent implantation. This study is the largest to date to evaluate post-op positioning of the Hydrus\u00ae Microstent using the NIDEK GS-1. Materials and Methods: This study analyzed postoperative outcomes and stent location in eyes diagnosed with mild to moderate glaucoma that underwent Hydrus\u00ae Microstent implantation with or without phacoemulsification. Patients with prior IOP-lowering surgery or vitrectomy were excluded. Analyses of the postoperative Hydrus\u00ae Microstent position were based on the evaluation of automated 360\u00b0 gonioscopy images. Results: Twenty-three eyes were included in the study, and all showed a reduction in IOP and a decrease in antiglaucomatous drop use postoperatively. Postoperative gonoscopic images showed variations in implant position. In all cases, the proximal inlet was clearly visible in the anterior chamber. The degree of protrusion into the anterior chamber was variable. The distal tip of the stent was visible behind the trabecular meshwork in Schlemm\u2019s canal in five cases, in the anterior chamber in one case, and not visible in seven cases. In no case did postoperative alterations in the position of the implant lead to explantation. Conclusions: This study demonstrated that the Hydrus\u00ae Microstent can effectively lower IOP even in the presence of postoperative positional variations. Automated 360\u00b0 gonioscopy was found to be a useful tool to verify and document the postoperative position of the implant. Positional changes did not require device explantation in any of the cases evaluated.<\/jats:p>","DOI":"10.3390\/jcm13175333","type":"journal-article","created":{"date-parts":[[2024,9,9]],"date-time":"2024-09-09T07:14:04Z","timestamp":1725866044000},"page":"5333","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Visualization of the Postoperative Position of the Hydrus\u00ae Microstent Using Automatic 360\u00b0 Gonioscopy"],"prefix":"10.3390","volume":"13","author":[{"given":"Julian Alexander","family":"Zimmermann","sequence":"first","affiliation":[{"name":"Department of Ophthalmology, University of Muenster Medical Center, 48149 Muenster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"Kleemann","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, University of Muenster Medical Center, 48149 Muenster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8063-6548","authenticated-orcid":false,"given":"Jens Julian","family":"Storp","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, University of Muenster Medical Center, 48149 Muenster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-5136-5997","authenticated-orcid":false,"given":"Cedric","family":"Weich","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, University of Muenster Medical Center, 48149 Muenster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ralph-Laurent","family":"Mert\u00e9","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, University of Muenster Medical Center, 48149 Muenster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicole","family":"Eter","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, University of Muenster Medical Center, 48149 Muenster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5536-8043","authenticated-orcid":false,"given":"Viktoria Constanze","family":"Br\u00fccher","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, University of Muenster Medical Center, 48149 Muenster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,9,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1901","DOI":"10.1001\/jama.2014.3192","article-title":"The Pathophysiology and Treatment of Glaucoma: A Review","volume":"311","author":"Weinreb","year":"2014","journal-title":"JAMA"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2183","DOI":"10.1016\/S0140-6736(17)31469-1","article-title":"Glaucoma","volume":"390","author":"Jonas","year":"2017","journal-title":"Lancet"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"139","DOI":"10.1016\/j.ophtha.2022.09.009","article-title":"Laser in Glaucoma and Ocular Hypertension (LiGHT) Trial: Six-Year Results of Primary Selective Laser Trabeculoplasty versus Eye Drops for the Treatment of Glaucoma and Ocular Hypertension","volume":"130","author":"Gazzard","year":"2023","journal-title":"Ophthalmology"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1007\/s00347-020-01146-x","article-title":"Aktuelle Glaukomchirurgie","volume":"118","author":"Hoffmann","year":"2021","journal-title":"Ophthalmologe"},{"key":"ref_5","unstructured":"IVANTIS (2024, August 02). 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