Long-term effect of phacoemulsification on intraocular pressure after trabeculectomy

J Cataract Refract Surg. 2002 Mar;28(3):425-30. doi: 10.1016/s0886-3350(01)01189-0.


Purpose: To evaluate the effect of temporal clear corneal phacoemulsification on intraocular pressure (IOP) in eyes that have had trabeculectomy.

Setting: 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.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Antihypertensive Agents / therapeutic use
  • Cornea / surgery
  • Female
  • Follow-Up Studies
  • Glaucoma, Open-Angle / drug therapy
  • Glaucoma, Open-Angle / physiopathology
  • Glaucoma, Open-Angle / surgery*
  • Humans
  • Intraocular Pressure / physiology*
  • Lens Implantation, Intraocular
  • Longitudinal Studies
  • Male
  • Middle Aged
  • Phacoemulsification*
  • Retrospective Studies
  • Trabeculectomy*
  • Visual Acuity


  • Antihypertensive Agents