title: [Optimizing the distribution and test locations in statistical perimetry. Preliminary results].
abstract: BACKGROUND
  Are short programs useful to glaucoma-screening? We investigated the concept of Program G1x with Octopus 1-2-3, which permits examination of various numbers of test locations i.e., 16, 32, 45, or all 59 test locations.
  
  
  METHODS
  Using 99 visual fields of glaucomatous or glaucoma-suspect right eyes, we compared mean defect (MD) and loss variance (LV) of the global visual field with MD and LV of the stages of G1x-program (standard strategy).
  
  
  RESULTS
  The results showed that stage 1 of Program G1x underestimated the glaucomatous visual field damage present in the entire field.
  
  
  CONCLUSIONS
  Thus, the use of only the first stage (16 test locations) of G1x is not advisable. At least 32 test locations, i.e., stages 1 and 2 of program G1x, are recommended for clinical perimetry.
authors.affiliation: Univ.-Augenklinik Basel, Zürich.
authors.forename: K
authors.initials: K
authors.lastname: Sugimoto
authors.forename: M
authors.initials: M
authors.lastname: Zulauf
authors.forename: A
authors.initials: A
authors.lastname: Schötzau
authors.forename: R
authors.initials: R
authors.lastname: Rentsch
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005901:Glaucoma / Q000175:diagnosis / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009798:Ocular Hypertension / Q000175:diagnosis / Q000517:prevention & control*; D011237:Predictive Value of Tests; D012815:Signal Processing, Computer-Assisted; D012984:Software; D058609:Visual Field Tests / Q000295:instrumentation / Q000706:statistics & numerical data*