title: Long-term effect of phacoemulsification on intraocular pressure after trabeculectomy.
abstract: OBJECTIVE
  To evaluate the effect of temporal clear corneal phacoemulsification on intraocular pressure (IOP) in eyes that have had trabeculectomy.
  
  
  METHODS
  Department of Ophthalmology, University of Vienna, Vienna, Austria.
  
  
  METHODS
  This retrospective study evaluated the IOP in 48 eyes (35 patients) that had temporal clear corneal phacoemulsification after trabeculectomy. The mean interval between trabeculectomy and phacoemulsification was 27 months +/- 21 (SD) and the mean follow-up after phacoemulsification, 23 +/- 12 months. Intraocular pressure and antiglaucoma therapy before cataract surgery and at the end of follow-up were evaluated. For statistical analysis, the paired t test, Wilcoxon test, and chi-square test were used.
  
  
  RESULTS
  Thirty-five eyes (73%) preoperatively and 25 eyes (52%) postoperatively were controlled (IOP < 22 mm Hg) without antiglaucoma therapy. The difference was statistically significant (P =.04, chi-square test). At the end of follow-up, the increase in mean IOP (1.6 mm Hg) and in mean number of antiglaucoma medications (0.4) was statistically significant (P =.002 and P =.05, respectively).
  
  
  CONCLUSIONS
  Temporal clear corneal phacoemulsification after trabeculectomy was followed by a slight but statistically significant increase in IOP and the need for antiglaucoma medication after 2 years. However, the impairment in IOP control is comparable to that in the natural course of trabeculectomy.
authors.affiliation: Department of Ophthalmology, University of Vienna, Vienna, Austria. dr_agnes_derbolav@yahoo.com
authors.forename: Agnes
authors.initials: A
authors.lastname: Derbolav
authors.forename: Clemens
authors.initials: C
authors.lastname: Vass
authors.forename: Rupert
authors.initials: R
authors.lastname: Menapace
authors.forename: Karin
authors.initials: K
authors.lastname: Schmetterer
authors.forename: Andreas
authors.initials: A
authors.lastname: Wedrich
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000959:Antihypertensive Agents / Q000627:therapeutic use; D003315:Cornea / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D005902:Glaucoma, Open-Angle / Q000188:drug therapy / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D019654:Lens Implantation, Intraocular; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D012189:Retrospective Studies; D014130:Trabeculectomy; D014792:Visual Acuity
chemical_list: D000959:Antihypertensive Agents