Chen Xin, Qing Sang, Shen Wu, Rui-Qi Pang, Dan-Ting Lin, Huai-Zhou Wang, Ning Lu, Ning-Li Wang
{"title":"Rebalancing translaminar pressure difference: a novel glaucoma surgery-a pilot trial in non-human primates.","authors":"Chen Xin, Qing Sang, Shen Wu, Rui-Qi Pang, Dan-Ting Lin, Huai-Zhou Wang, Ning Lu, Ning-Li Wang","doi":"10.18240/ijo.2025.09.02","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>To propose a novel glaucoma surgery for rebalancing translaminar pressure difference.</p><p><strong>Methods: </strong>Three non-human primates with normal eyes and two with laser-induced glaucoma underwent the novel surgical procedure. Cannulation of the subarachnoid space was performed after completion of routine vitrectomy steps. An XEN 45 implant was inserted into the created puncture to communicate between the vitreous body and subarachnoid space. Intraocular pressure (IOP), fundus photography, and spectral-domain optical coherence tomography were assessed at baseline and regular intervals during follow-up.</p><p><strong>Results: </strong>All operated eyes showed IOP reduction in the first postoperative month. Two (2/3) normal eyes and one (1/2) glaucomatous eye maintained lower IOP until 18mo after operation. The XEN 45 implant remained positioned through the lamina cribrosa in all normal eyes but was not detected in two glaucomatous eyes. Complications observed in this study included retinal vascular bleeding in 1/3 normal eyes and XEN implant dislocation in all 2 glaucomatous eyes.</p><p><strong>Conclusion: </strong>Subarachnoid space cannulation and mini-shunt implantation may contribute to IOP reduction, possibly by rebalancing translaminar pressure difference and enhancing aqueous humor drainage. The development of a suitable mini-shunt requires further investigation.</p>","PeriodicalId":14312,"journal":{"name":"International journal of ophthalmology","volume":"18 9","pages":"1619-1625"},"PeriodicalIF":1.8000,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12378670/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International journal of ophthalmology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.18240/ijo.2025.09.02","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"OPHTHALMOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Aim: To propose a novel glaucoma surgery for rebalancing translaminar pressure difference.
Methods: Three non-human primates with normal eyes and two with laser-induced glaucoma underwent the novel surgical procedure. Cannulation of the subarachnoid space was performed after completion of routine vitrectomy steps. An XEN 45 implant was inserted into the created puncture to communicate between the vitreous body and subarachnoid space. Intraocular pressure (IOP), fundus photography, and spectral-domain optical coherence tomography were assessed at baseline and regular intervals during follow-up.
Results: All operated eyes showed IOP reduction in the first postoperative month. Two (2/3) normal eyes and one (1/2) glaucomatous eye maintained lower IOP until 18mo after operation. The XEN 45 implant remained positioned through the lamina cribrosa in all normal eyes but was not detected in two glaucomatous eyes. Complications observed in this study included retinal vascular bleeding in 1/3 normal eyes and XEN implant dislocation in all 2 glaucomatous eyes.
Conclusion: Subarachnoid space cannulation and mini-shunt implantation may contribute to IOP reduction, possibly by rebalancing translaminar pressure difference and enhancing aqueous humor drainage. The development of a suitable mini-shunt requires further investigation.
期刊介绍:
· International Journal of Ophthalmology-IJO (English edition) is a global ophthalmological scientific publication
and a peer-reviewed open access periodical (ISSN 2222-3959 print, ISSN 2227-4898 online).
This journal is sponsored by Chinese Medical Association Xi’an Branch and obtains guidance and support from
WHO and ICO (International Council of Ophthalmology). It has been indexed in SCIE, PubMed,
PubMed-Central, Chemical Abstracts, Scopus, EMBASE , and DOAJ. IJO JCR IF in 2017 is 1.166.
IJO was established in 2008, with editorial office in Xi’an, China. It is a monthly publication. General Scientific
Advisors include Prof. Hugh Taylor (President of ICO); Prof.Bruce Spivey (Immediate Past President of ICO);
Prof.Mark Tso (Ex-Vice President of ICO) and Prof.Daiming Fan (Academician and Vice President,
Chinese Academy of Engineering.
International Scientific Advisors include Prof. Serge Resnikoff (WHO Senior Speciatist for Prevention of
blindness), Prof. Chi-Chao Chan (National Eye Institute, USA) and Prof. Richard L Abbott (Ex-President of
AAO/PAAO) et al.
Honorary Editors-in-Chief: Prof. Li-Xin Xie(Academician of Chinese Academy of
Engineering/Honorary President of Chinese Ophthalmological Society); Prof. Dennis Lam (President of APAO) and
Prof. Xiao-Xin Li (Ex-President of Chinese Ophthalmological Society).
Chief Editor: Prof. Xiu-Wen Hu (President of IJO Press).
Editors-in-Chief: Prof. Yan-Nian Hui (Ex-Director, Eye Institute of Chinese PLA) and
Prof. George Chiou (Founding chief editor of Journal of Ocular Pharmacology & Therapeutics).
Associate Editors-in-Chief include:
Prof. Ning-Li Wang (President Elect of APAO);
Prof. Ke Yao (President of Chinese Ophthalmological Society) ;
Prof.William Smiddy (Bascom Palmer Eye instituteUSA) ;
Prof.Joel Schuman (President of Association of University Professors of Ophthalmology,USA);
Prof.Yizhi Liu (Vice President of Chinese Ophtlalmology Society);
Prof.Yu-Sheng Wang (Director of Eye Institute of Chinese PLA);
Prof.Ling-Yun Cheng (Director of Ocular Pharmacology, Shiley Eye Center, USA).
IJO accepts contributions in English from all over the world. It includes mainly original articles and review articles,
both basic and clinical papers.
Instruction is Welcome Contribution is Welcome Citation is Welcome
Cooperation organization
International Council of Ophthalmology(ICO), PubMed, PMC, American Academy of Ophthalmology, Asia-Pacific, Thomson Reuters, The Charlesworth Group, Crossref,Scopus,Publons, DOAJ etc.