title: Comparison of Three Visual Field Tests in Children: Frequency Doubling Test, 24-2 and 30-2 SITA Perimetry.
abstract: BACKGROUND
  To investigate the reliability of FDT and 24-2 and 30-2 Humphrey perimetry in children.
  
  
  METHODS
  We retrospectively reviewed the records corresponding to 274 eyes of children aged 6-12 years, who underwent FDT and 30-2 and 24-2 Humphrey visual field testing from January 2011 through March 2013. Each test group was divided into two subgroups: a normal visual acuity subgroup (> 0.8 Snellen, group 1) and a low visual acuity subgroup (≤0.8 Snellen, group 2). Reliability indexes such as fixation losses, test duration, and the number and rate of false-positive errors were analyzed.
  
  
  RESULTS
  In both subgroups, test duration was shortest for 24-2 perimetry (group 1: p < 0.0001; group 2: p < 0.0001). FDT was associated with lower rates of fixation loss, false positive errors, and false negative errors than 30-2 perimetry. However, the fixation loss rate of FDT was only significantly lower under the subgroup analysis. The normal visual acuity subgroup had a higher MD score on FDT vs. 30-2 perimetry (P = 0.028). However, the PSD was similar for all tests.
  
  
  CONCLUSIONS
  This reliability study showed that FDT perimetry is superior to 30-2 SITA perimetry. There was no significant difference in the reliability indexes for FDT and 24-2 SITA perimetry; thus, when considering test duration and reliability, 24-2 SITA perimetry appears to be the optimal choice in pediatric patients.
authors.affiliation: a Department of Ophthalmology , Kim's Eye Hospital, Seoul , Korea.
authors.forename: Sangyoun
authors.initials: S
authors.lastname: Han
authors.affiliation: a Department of Ophthalmology , Kim's Eye Hospital, Seoul , Korea.
authors.forename: Seung-Hee
authors.initials: SH
authors.lastname: Baek
authors.affiliation: a Department of Ophthalmology , Kim's Eye Hospital, Seoul , Korea.|b Department of Ophthalmology , Konyang University College of Medicine , Daejeon , Korea.
authors.forename: Ungsoo Samuel
authors.initials: US
authors.lastname: Kim
mesh_terms: D000704:Analysis of Variance; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014786:Vision Disorders / Q000175:diagnosis*; D014792:Visual Acuity / Q000502:physiology; D058609:Visual Field Tests / Q000379:methods*; D014794:Visual Fields / Q000502:physiology*
keywords: Frequency doubling technology (FDT); Swedish Interactive Thresholding Algorithm (SITA); reliability indexes; visual field test