title: Evaluation of peripheral binocular visual field in patients with glaucoma: a pilot study.
abstract: OBJECTIVE
  The objective of this study was to evaluate the peripheral binocular visual field (PBVF) in patients with glaucoma using the threshold strategy of Humphrey Field Analyzer.
  
  
  METHODS
  We conducted a case-control pilot study in which we enrolled 59 patients with glaucoma and 20 controls. All participants were evaluated using a custom PBVF test and central 24 degrees monocular visual field tests for each eye using the threshold strategy. The central binocular visual field (CBVF) was predicted from the monocular tests using the most sensitive point at each field location. The glaucoma patients were grouped according to Hodapp classification and age. The PBVF was compared to controls and the relationship between the PBVF and CBVF was tested.
  
  
  RESULTS
  The areas of frame-induced artefacts were determined (over 50 degrees in each temporal field, 24 degrees superiorly and 45 degrees inferiorly) and excluded from interpretation. The patients presented a statistically significant generalized decrease of the peripheral retinal sensitivity compared to controls for Hodapp initial stage--groups aged 50-59 (t = 11.93 > 2.06; p < 0.05) and 60-69 (t = 7.55 > 2.06; p < 0.05). For the initial Hodapp stage there was no significant relationship between PBVF and CBVF (r = 0.39). For the moderate and advanced Hodapp stages, the interpretation of data was done separately for each patient.
  
  
  CONCLUSIONS
  This pilot study suggests that glaucoma patients present a decrease of PBVF compared to controls and CBVF cannot predict the PBVF in glaucoma.
authors.forename: Banc
authors.initials: B
authors.lastname: Ana
authors.forename: Stan
authors.initials: S
authors.lastname: Cristina
authors.forename: Chiselita
authors.initials: C
authors.lastname: Dorin
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D005260:Female; D005901:Glaucoma / Q000145:classification; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D015203:Reproducibility of Results; D015348:Vision, Binocular; D015349:Vision, Monocular; D014792:Visual Acuity; D058609:Visual Field Tests / Q000379:methods; D014794:Visual Fields