title: Intraocular pressure before and after visual field examination.
abstract: OBJECTIVE
  To evaluate the influence of visual field (VF) examinations using modern techniques with short examination times on the intraocular pressure (IOP).
  
  
  METHODS
  Sixty-one consecutive patients, aged 28-90 years, 40 women and 21 men, were examined. Forty patients were treated for glaucoma and 21 were untreated patients with ocular hypertension or suspected glaucoma. Twenty-one subjects were examined using the Humphrey Field Analyzer, using SITA programs, and 40 with high-pass resolution perimetry (HRP). Goldmann applanation tonometry was performed immediately before and after the VF examinations.
  
  
  RESULTS
  A difference in IOP of more than 2 mm Hg before and after the VF examination was observed in 14 of the 61 patients (23%). The maximum change in each direction was 4 mm Hg. The mean differences were not significant. All eight subjects with increasing IOP after VF examinations were examined using the HRP technique (P=0.04).
  
  
  CONCLUSIONS
  Modern VF techniques with short examination time do not seem to significantly influence IOP.
authors.affiliation: Department of Clinical Neuroscience, Section of Ophthalmology and Vision, Karolinska Institutet, Stockholm, Sweden. lene.martin@ste.ki.se
authors.forename: L
authors.initials: L
authors.lastname: Martin
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003941:Diagnostic Techniques, Ophthalmological; D005260:Female; D005901:Glaucoma / Q000175:diagnosis / Q000503:physiopathology; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D009798:Ocular Hypertension / Q000175:diagnosis* / Q000503:physiopathology; D013997:Time Factors; D014065:Tonometry, Ocular; D058609:Visual Field Tests; D014794:Visual Fields