title: Learning effect among perimetric novices with screening C-20-1 frequency doubling technology perimetry.
abstract: OBJECTIVE
  To investigate whether perimetric novices without glaucoma demonstrate a learning effect using screening-mode frequency doubling technology perimetry.
  
  
  METHODS
  Prospective observational study.
  
  
  METHODS
  The study included 101 healthy subjects who had never undergone automated perimetry and who were administered the C-20-1 version of the frequency doubling technology. Subjects who returned an abnormal or unreliable test were retested until a normal result was obtained.
  
  
  RESULTS
  Ninety-seven subjects (96%) returned a normal examination after one test, and 99 (98%) did so after two tests. Two subjects had abnormal initial tests, and two others had unreliable tests. These four subjects required repeat (up to four) testings to return a normal test.
  
  
  CONCLUSIONS
  A small percentage of perimetric novices will demonstrate a learning effect using C-20-1 perimetry, but this mode has high specificity appropriate for glaucoma screening.
authors.affiliation: Department of Ophthalmology, University of Washington, Seattle, Washington 98195-6485, USA. pchen@u.washington.edu
authors.forename: Michael B
authors.initials: MB
authors.lastname: Brush
authors.forename: Philip P
authors.initials: PP
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005902:Glaucoma, Open-Angle / Q000175:diagnosis*; D006801:Humans; D007858:Learning; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014786:Vision Disorders / Q000175:diagnosis*; D015351:Vision Screening; D058609:Visual Field Tests / Q000379:methods*; D014794:Visual Fields