The advantages of adhesive lenses for correcting errors of refraction have to be set against the disadvantages, particularly for drivers. Restrictions of the field of vision are possible because of the optical structure of the edge zones and the firly thick lacrimal film. Alterations in field of vision can be balanced out with use. Special contact lens shapes have to be used under certain conditions in order to achieve good visual acuity. Vision in darkness and dusk is usually impaired by adhesive lenses, night myopia increases, and increased formation of scattered light and over-sensitivity to light lead to greater dazzle. Dark adaptation may be considerably impaired by dark adhesive lenses. After the contact lenses have been removed unclear vision often occurs for up to 21 days, and this is not compensated for by the immediate wearing of spectacles. Smaller lenses are best in this respect. These again cause noticeable formation of scattered light. A questionnaire study of wearers of contact lenses showed that judgment of distance was mostly much better with contact lenses. The greater field of vision was regarded as particularly favourable. /TRRL/

  • Corporate Authors:

    VER Verlag Technik

    Oranienburger Strasse 13/14
    102 Berlin,   Germany 
  • Authors:
    • Stone, J
  • Publication Date: 1972


  • German

Media Info

  • Features: Figures; References;
  • Pagination: 4 p.
  • Serial:
    • Augenoptik
    • Volume: 89
    • Issue Number: 2/3
    • Publisher: VER Verlag Technik

Subject/Index Terms

Filing Info

  • Accession Number: 00097604
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Jul 24 1976 12:00AM