title: Relation between perceived driving disability and scores of vision screening tests.
abstract: OBJECTIVE
  To determine the relation between perceived driving disability and vision screening tests.
  
  
  METHODS
  93 subjects, aged 50 years and over, with binocular visual acuity of at least 20/80. Perceived driving disability (PDD) was assessed by a questionnaire. Subtracting daytime from night-time driving question scores revealed PDD at night (PDDN), subtracting scores of questions for driving in familiar places from those in unfamiliar places revealed PDD at unfamiliar places (PDDU).
  
  
  RESULTS
  PDD was strongly related to visual acuity, contrast sensitivity and useful field of view (UFOV). Specific relations existed between PDDN and Nyktotests and Mesotests and between PDDU and UFOV. These associations were enhanced in a subset of subjects with better visual acuities.
  
  
  CONCLUSIONS
  Vision screening tests correlate well with perceived driving disabilities, especially when a subtraction method is used in the questionnaire to reveal condition dependent disabilities. Additional tests for visual acuity are useful, especially in subjects with better visual acuity.
authors.affiliation: Department of Ophthalmology, Vrije Universiteit Medical Centre, Amsterdam, Netherlands. vanrijin@vumc.nl
authors.forename: L J
authors.initials: LJ
authors.lastname: van Rijn
authors.forename: H
authors.initials: H
authors.lastname: Wilhelm
authors.forename: M
authors.initials: M
authors.lastname: Emesz
authors.forename: R
authors.initials: R
authors.lastname: Kaper
authors.forename: S
authors.initials: S
authors.lastname: Heine
authors.forename: S
authors.initials: S
authors.lastname: Nitsch
authors.forename: G
authors.initials: G
authors.lastname: Grabner
authors.forename: H J
authors.initials: HJ
authors.lastname: Völker-Dieben
mesh_terms: D001334:Automobile Driving; D015350:Contrast Sensitivity; D006801:Humans; D008875:Middle Aged; D011795:Surveys and Questionnaires; D014787:Vision Tests; D014792:Visual Acuity; D014794:Visual Fields