title: Mesopic visual acuity requirements for driving licenses in the European Union-Research Report.
abstract: In this study different methods for determining the mesopic visual acuity in candidates for driving licenses group 2 are presented (Royal Decree, 1998, European norms). Results of normal subjects are compared. Depending on the method used, visual acuity obtained under mesopic conditions, with an illuminance of 1 lux, showed a mean ranging from 0.5 to 0.65, which is clearly above the legal norm of 0.2. A comparative study of the three published official norms demonstrates that the stringent norms of 1966 do not match those of 1988 and 1998, resulting in a wider margin of acceptability, to the advantage of the candidate.
authors.affiliation: Department of Ophthalmology, Ghent University Hospital, Belgium.
authors.forename: A
authors.initials: A
authors.lastname: Uvijls
authors.forename: R
authors.initials: R
authors.lastname: Baets
authors.forename: B P
authors.initials: BP
authors.lastname: Leroy
authors.forename: P
authors.initials: P
authors.lastname: Kestelyn
mesh_terms: D000328:Adult; D001333:Automobile Driver Examination; D005062:European Union; D006801:Humans; D008004:Licensure / Q000592:standards; D008875:Middle Aged; D012016:Reference Values; D014787:Vision Tests / Q000379:methods* / Q000592:standards; D014792:Visual Acuity