title: Effect of temporal clear corneal phacoemulsification on intraocular pressure in eyes with prior Ahmed glaucoma valve insertion.
abstract: OBJECTIVE
  To evaluate the effect of temporal clear corneal phacoemulsification on intraocular pressure (IOP) in eyes after Ahmed glaucoma valve insertion.
  
  
  METHODS
  Department of Ophthalmology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea.
  
  
  METHODS
  The files of 13 patients who received phacoemulsification after Ahmed glaucoma valve insertion were reviewed in this retrospective case series. Visual acuity, IOP, and the number of glaucoma medications before phacoemulsification were used as a baseline for comparison with the values at various follow-up intervals.
  
  
  RESULTS
  The mean IOP before phacoemulsification was 15.1 mm Hg +/- 3.6 (SD). Postoperatively, it was 12.8 +/- 4.5 mm Hg, 13.1 +/- 3.6 mm Hg, 16.4 +/- 5.2 mm Hg, 15.8 +/- 4.0 mm Hg, 16.1 +/- 3.9 mm Hg, 15.3 +/- 4.1 mm Hg, and 15.2 +/- 3.4 mm Hg at 1 day after 1 week, at 1, 2, 6, and 12 months, and at last visits, respectively. The mean IOP did not differ significantly from the prephacoemulsification value at any follow-up. The number of glaucoma medications increased significantly after phacoemulsification (P = .031), and 6 of 13 eyes required additional glaucoma medication because of IOP elevation at approximately 1 month.
  
  
  CONCLUSIONS
  Temporal clear corneal phacoemulsification did not increase IOP significantly in eyes with prior Ahmed glaucoma valve insertion. However, some eyes experienced an IOP elevation 1 month after phacoemulsification and required glaucoma medication.
authors.affiliation: Department of Ophthalmology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea.
authors.forename: Ho-Seok
authors.initials: HS
authors.lastname: Sa
authors.forename: Changwon
authors.initials: C
authors.lastname: Kee
mesh_terms: D000959:Antihypertensive Agents / Q000627:therapeutic use; D003315:Cornea / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D005901:Glaucoma / Q000188:drug therapy / Q000601:surgery*; D020327:Glaucoma Drainage Implants; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D019919:Prosthesis Implantation; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology
chemical_list: D000959:Antihypertensive Agents