Effects of short-term VDT usage on visual functions

Optom Vis Sci. 1989 Jul;66(7):459-66. doi: 10.1097/00006324-198907000-00009.


An on-site comparative study was carried out on the effects of video display terminal (VDT) and non-VDT work on visual functions in two working populations in the same office environment. Both continuous VDT usage in a training situation over a few days and intermittent VDT usage in a normal working situation were assessed and particular attention paid to their effects on the refractive error of different refractive groups and for different age populations. Other visual functions measured were visual acuity (VA), accommodation, and convergence. Results show that VDT work does not have a significantly greater effect on visual function than non-VDT work.

Publication types

  • Comparative Study

MeSH terms

  • Accommodation, Ocular
  • Adult
  • Age Factors
  • Computer Systems*
  • Convergence, Ocular
  • Female
  • Humans
  • Male
  • Occupations
  • Refractive Errors / complications
  • Vision, Ocular / physiology*
  • Vision, Ocular / radiation effects
  • Visual Acuity