Purpose: Our aim was to investigate the efficiency of adenoviral gene transfer via direct injection into the Schlemm canal ex vivo in human donor eyes and to examine the effect of human MMP-3 transgene expression in a rat model in vivo.
Methods: A viscocanalostomy-like operation was performed and adenoviral vector encoding for MMP-3 and green fluorescent protein was injected into human Schlemm canal or rat anterior chamber.
Results: Transgene expression was high in trabecular meshwork endothelium in human donor eyes. In vivo, adenovirus caused dose-dependent inflammation.
Conclusions: Direct injection of adenoviral vectors into the Schlemm canal has potential in glaucoma treatment.
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http://dx.doi.org/10.1080/02713680500323350 | DOI Listing |
Purpose: To investigate the characteristics and publication status of minimally invasive glaucoma surgery (MIGS) clinical trials registered on ClinicalTrials.gov.
Design: A cross-sectional study.
J Glaucoma
January 2025
Department of Ophthalmology, Tan Tock Seng Hospital, National Healthcare Group Eye Institute, Singapore.
Purpose: Trabecular micro-bypass devices (TBDs) such as the iStent series (Glaukos Corporation, Laguna Hills, CA), are effective in reducing intraocular pressure (IOP). However, precise placement of TBDs is crucial in achieving surgical efficacy, as device malpositioning may lead to suboptimal IOP reduction. We demonstrate two novel intra-operative signs to aid confirmation of accurate iStent placement, without reliance on imaging technologies.
View Article and Find Full Text PDFIntroduction: Cataract surgery has been reported to have a reducing effect on intraocular pressure (IOP) in glaucomatous and non-glaucomatous eyes. This effect seems to be more noticeable in eyes with narrow angles (NAs) than in eyes with open angles (OAs). Decrease in IOP may be a result of the increase in anterior chamber angle (ACA) and Schlemm canal (SC) after cataract surgery.
View Article and Find Full Text PDFSince the trabecular meshwork (TM) is central to intraocular pressure (IOP) regulation and glaucoma, a deeper understanding of its genomic landscape is needed. We present a multimodal, single-cell resolution analysis of mouse limbal cells (includes TM). In total, we sequenced 9,394 wild-type TM cell transcriptomes.
View Article and Find Full Text PDFKlin Monbl Augenheilkd
January 2025
Minimally invasive glaucoma surgeries (MIGS) offer an alternative approach, aiming to be both safe and effective. Defined by their ab interno technique, which avoids creating a bleb, MIGS procedures seek to reduce intraocular pressure (IOP) by enhancing the outflow pathways of aqueous humor. Techniques include stenting, incisions, and excisions of the trabecular meshwork, canaloplasty of Schlemm's canal, and drainage implants that enhance uveoscleral outflow to the subchoroidal space.
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