Journal of Current Glaucoma Practice

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VOLUME 15 , ISSUE 3 ( September-December, 2021 ) > List of Articles


XEN Gel Staining with Trypan Blue: A Simple and Effective Technique to Improve Device Visualization during Implantation

Vincenzo Ramovecchi, Fabrizio Franco, Giuseppe Ruben Barbera

Keywords : Complications, Glaucoma, Minimally invasive glaucoma surgery, XEN implant

Citation Information : Ramovecchi V, Franco F, Barbera GR. XEN Gel Staining with Trypan Blue: A Simple and Effective Technique to Improve Device Visualization during Implantation. J Curr Glaucoma Pract 2021; 15 (3):161-163.

DOI: 10.5005/jp-journals-10078-1318

License: CC BY-NC 4.0

Published Online: 27-01-2022

Copyright Statement:  Copyright © 2021; The Author(s).


The Xen Gel Stent (Allergan, Irvine, CA, USA) is a hydrophilic collagen-based gelatin tube of 6 mm in length which creates a channel of communication between the anterior chamber and the subconjunctival space allowing aqueous humor outflow. XEN is an ab interno, minimally invasive, glaucoma surgery device which has a better safety profile and offers a less invasive way of lowering intraocular pressure. Unfortunately, one of its weaknesses is that visualization of the implant during surgery is difficult, and this difficulty may be exacerbated, for instance, by a subconjunctival hemorrhage. The purpose of this paper is to describe a simple and effective technique for improving device visualization (XEN 45 μm) during the implantation.

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