title: Five-year results of deep sclerectomy with collagen implant.
abstract: OBJECTIVE
  To study prospectively the success rate and complications of deep sclerectomy with collagen implant (DSCI), a nonpenetrating filtration procedure.
  
  
  METHODS
  Glaucoma Unit, Department of Ophthalmology, Hôpital Ophtalmique Jules Gonin, University of Lausanne, Lausanne, Switzerland.
  
  
  METHODS
  This nonrandomized prospective trial comprised 105 eyes of 105 patients with medically uncontrolled primary or secondary open-angle glaucoma. Visual acuity, intraocular pressure (IOP), and slitlamp examinations were performed before and after surgery at 1 and 7 days and 1, 3, 6, 9, 12, 18, 24, 30, 36, 48, 54, 60, and 66 months. Visual field examinations were repeated every 6 months. A qualified success was defined as IOP below 21 mm Hg with or without medication. A complete success was defined as IOP lower than 21 mm Hg without medication.
  
  
  RESULTS
  The mean follow-up was 43.2 months +/- 14.3 (SD). The mean IOP was 26.8 +/- 7 mm Hg preoperatively, 5.1 +/- 3 mm Hg 1 day postoperatively, and 11.8 +/- 3 mm Hg 60 months postoperatively. At 60 months, the qualified success rate was 94.8% and the complete success rate, 61.9%. The IOP was lower than 21 mm Hg with medication in 32.1% of patients at 60 months; 48 patients (45.7%) had an IOP of 15 mm Hg or lower without medication. No patient developed a shallow or flat anterior chamber, endophthalmitis, or surgery-induced cataract. However, 23 (21.9%) had progression of a preexisting senile cataract. Injections of 5-fluorouracil were given to 25 patients (23.8%) who had DSCI to salvage encysted blebs. The mean number of medications per patient was reduced from 2.30 +/- 0.76 to 0.49 +/- 0.72.
  
  
  CONCLUSIONS
  Deep sclerectomy with collagen implant provided reasonable IOP over a long-term follow-up with few immediate postoperative complications.
authors.affiliation: Hôpital Ophtalmique Jules Gonin, Department of Ophthalmology, University of Lausanne, Lausanne, Switzerland. tshaarawy@yahoo.com
authors.forename: T
authors.initials: T
authors.lastname: Shaarawy
authors.forename: M
authors.initials: M
authors.lastname: Karlen
authors.forename: C
authors.initials: C
authors.lastname: Schnyder
authors.forename: F
authors.initials: F
authors.lastname: Achache
authors.forename: E
authors.initials: E
authors.lastname: Sanchez
authors.forename: A
authors.initials: A
authors.lastname: Mermoud
mesh_terms: D000368:Aged; D003094:Collagen; D005260:Female; D005500:Follow-Up Studies; D005902:Glaucoma, Open-Angle / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure; D007431:Intraoperative Complications; D008297:Male; D011183:Postoperative Complications; D011446:Prospective Studies; D019919:Prosthesis Implantation; D012590:Sclera / Q000601:surgery*; D012599:Sclerostomy / Q000379:methods*; D016896:Treatment Outcome; D014792:Visual Acuity; D014794:Visual Fields
chemical_list: D003094:Collagen