title: Early Clinical Results of a Novel Ab Interno Gel Stent for the Surgical Treatment of Open-angle Glaucoma.
abstract: To evaluate the intraocular pressure (IOP) lowering effect of the XEN140 microfistula gel stent implant for the surgical treatment of open-angle glaucoma.
  
  
  
  Forty-nine eyes of 49 patients with an IOP>18 mm Hg and ≤35 mm Hg were studied in a prospective nonrandomized multicenter cohort trial of the surgical implantation of the XEN140 implant in patients with open-angle glaucoma. Complete success was defined as a postoperative IOP≤18 mm Hg with ≥20% reduction in IOP at 12 months without any glaucoma medications. Failure was defined as vision loss of light perceptions vision or worse, need for additional glaucoma surgery, or <20% reduction of IOP from baseline.
  
  
  
  The average age was 64.3 (28.1 to 86.9) years old. Twenty-one eyes had prior failed trabeculectomy with mitomycin C surgery. IOP at 12 months decreased from a mean of 23.1 (±4.1) mm Hg to 14.7 (±3.7) mm Hg for a 36.4% reduction in IOP from baseline. The number of patients at 12 months who achieved an IOP≤18 mm Hg and ≥20% reduction in IOP was 40 (89%). The number of patients who achieved an IOP≤18 mm Hg and ≥20% reduction in IOP without antiglaucoma medications was 18 (40%).
  
  
  
  The XEN140 gel stent lowers IOP with few complications when implanted for the surgical treatment of open-angle glaucoma.
authors.affiliation: *Department of Ophthalmology and Visual Sciences, Washington University School of Medicine in St. Louis, St. Louis, MO †Institute for Vision Science, Ruhr University Eye Hospital, Bochum, Germany ‡Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto §Credit Valley Eye Care ∥Trillium Health Partners, Mississauga, ON, Canada.
authors.forename: Arsham
authors.initials: A
authors.lastname: Sheybani
authors.forename: H Burkhard
authors.initials: HB
authors.lastname: Dick
authors.forename: Iqbal I K
authors.initials: II
authors.lastname: Ahmed
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005782:Gels; D020327:Glaucoma Drainage Implants; D005902:Glaucoma, Open-Angle / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D015607:Stents; D014065:Tonometry, Ocular; D014130:Trabeculectomy; D017211:Treatment Failure; D016896:Treatment Outcome
chemical_list: D005782:Gels