title: Evaluation of aqueous outflow facility in patients with high intraocular pressure after cataract surgery.
abstract: To study whether patients with a marked elevation of intraocular pressure (IOP) the day after cataract surgery may have a chronically impaired aqueous outflow.
  
  
  
  In 128 consecutive patients, IOP was measured both preoperatively and the day after phacoemulsification and intraocular lens implantation. In the late postoperative period, aqueous outflow facility (C-value) was measured with pneumatonography in patients (n = 7) who experienced a postoperative IOP increase of at least 20 mm Hg and in patients (n = 11) with a difference between preoperative and postoperative IOP of not more than 2 mm Hg.
  
  
  
  Aqueous outflow facility was normal in both groups. Mean C-value was 0.32 +/- 0.18 microL/min/ mm Hg in the hypertensive group and 0.23 +/- 0.10 microL/ min/mm Hg in the normotensive group. The difference was not statistically significant (P = .20).
  
  
  
  Patients with marked IOP elevation the day after cataract surgery do not seem to have a chronically impaired aqueous outflow facility compared with normotensive patients.
authors.affiliation: St. Erik's Eye Hospital, Stockholm, Sweden.
authors.forename: Carl-Gustaf
authors.initials: CG
authors.lastname: Laurell
authors.forename: Eva
authors.initials: E
authors.lastname: Lydahl
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001082:Aqueous Humor / Q000502:physiology*; D002386:Cataract / Q000150:complications*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D009798:Ocular Hypertension / Q000150:complications / Q000503:physiopathology*; D018918:Phacoemulsification / Q000379:methods*; D014065:Tonometry, Ocular; D014129:Trabecular Meshwork / Q000503:physiopathology*; D016896:Treatment Outcome