What is a XEN Gel Stent Procedure?
The Xen Gel Stent is part of the latest innovation in treating glaucoma: Micro-Invasive Glaucoma Surgery (MIGS). Instead of an ab externo approach such as a trabeculectomy or Ex-PRESS Shunt – where a flap is made on the outside of the eye to release intraocular fluid – the XEN Gel Stent is inserted via an ab interno approach. Through a tiny, stab incision (a paracentesis), the anterior chamber is formed using viscoelastic. Mitomycin-c is applied beneath the conjunctiva at the site where fluid will ultimately exit the stent. The injector is inserted and advanced across the anterior chamber, through the trabecular meshwork, exiting the sclera into the subconjunctival space.
The injector’s slide mechanism then advances the stent forward, placing the stent in its intended location. The injector needle is then removed from the eye, following the same pathway it traveled into the eye. The placement of the stent allows for the draining of fluid from the anterior chamber into the subconjunctival space, reducing both intraocular pressure and compression of the optic nerve.