title: Long-term results of deep sclerectomy with collagen implant.
abstract: OBJECTIVE
  To study prospectively the success rate and complications of deep sclerectomy with collagen implant (DSCI).
  
  
  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 and secondary open-angle glaucoma. Visual acuity, intraocular pressure (IOP), and slitlamp examinations were performed before surgery and after surgery at 1 and 7 days, and 1, 3, 6, 9, 12, 18, 24, 30, 36, 48, 54, 60, 66, 72, 78, 84, 90, and 96 months. Visual field examinations were repeated every 6 months.
  
  
  RESULTS
  Mean follow-up period was 64 months +/- 26.6 (SD). Mean preoperative IOP was 26.8 +/- 7.7 mm Hg, and mean postoperative IOP was 5.2 +/- 3.35 mm Hg at day 1 and 12 +/- 3 mm Hg at month 78. At 96 months, the qualified success rate (ie, patients who achieved IOP <21 mm Hg with and without medication) was 91%, and the complete success rate (ie, IOP <21 mm Hg without medication) was 57%. At 96 months, 34% of patients had an IOP <21 mm Hg with medication. Fifty-one patients (49%) achieved an IOP < or =15 mm Hg without medication. Neodymium:YAG goniopuncture was performed in 54 patients (51%); mean time of goniopuncture performance was 21 months, and mean IOP before goniopuncture was 20 mm Hg, dropping to 11 mm Hg after goniopuncture. No shallow or flat anterior chamber, endophthalmitis, or surgery-induced cataract was observed. However, 26 patients (25%) showed a progression of preexisting senile cataract (mean time 26 months; range 18 to 37 months). Injections of 5-fluorouracil were administered to 25 patients (23%) who underwent DSCI to salvage encysted blebs. Mean number of medications per patient was reduced from 2.3 +/- 0.7 to 0.5 +/- 0.7 (signed rank P<.0001).
  
  
  CONCLUSIONS
  Deep sclerectomy with collagen implant appears to provide stable and reasonable control of IOP at long-term follow-up with few immediate postoperative complications.
authors.affiliation: Hôpital Ophtalmique Jules Gonin, Department of Ophthalmology, University of Lausanne, Lausanne, Switzerland. shaarwy@glaucoma-surgery.com
authors.forename: Tarek
authors.initials: T
authors.lastname: Shaarawy
authors.forename: Kaweh
authors.initials: K
authors.lastname: Mansouri
authors.forename: Corinne
authors.initials: C
authors.lastname: Schnyder
authors.forename: Emile
authors.initials: E
authors.lastname: Ravinet
authors.forename: Farid
authors.initials: F
authors.lastname: Achache
authors.forename: André
authors.initials: A
authors.lastname: Mermoud
mesh_terms: D000368:Aged; D003094:Collagen; D005260:Female; D005500:Follow-Up Studies; D020327:Glaucoma Drainage Implants; D005902:Glaucoma, Open-Angle / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D011379:Prognosis; D011446:Prospective Studies; D012590:Sclera / Q000601:surgery*; D012599:Sclerostomy / Q000379:methods*; D014792:Visual Acuity; D014794:Visual Fields
chemical_list: D003094:Collagen