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NR 1-3/2007
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Wpływ pracy przy
monitorach komputerowych na układ wzrokowy
Work with Visual Display
Units and its effect on the eye
Maria Niesłuchowska
Z Pracowni Ochrony Układu Wzrokowego Centrum Naukowego Medycyny
Kolejowej w Warszawie
Kierownik: prof. dr hab. n. med. Danuta Trusiewicz |
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| Summary: |
Purpose: To examine the
condition of visual functions of computer operators and
the influence of work at VDU on visual functions and on
self-satisfaction of computer users. The results of such
studies can be used to determine the range and methods
of carrying out qualification and prophylactic
examinations.
Material and methods: The investigation involved 5
groups consisted of 241 people at the age 21 to 60 years
(37 years on the average). A short-term visual work
(1-hour work with computer) was the subject of the study
of the first group. The influence of 6-hour work at VDU
on the eye was studied in case of the second group. The
subjects of the third group performed a routine office
work without computer. The relation between the type of
visual discomfort and working conditions (eg. natural
and artificial lighting) was examined with the fourth
group, while the examination of the fifth group aimed at
revealing whether the correction of ergonomic conditions
of workplaces had an effect on the reduction of
complaints and on visual functions (the research was
performed one year before the modernisation of
workplaces and one year after). The study of visual
complaints carried out with the use of questionnaires
included the evaluation of visual functions (like:
visual acuity, refraction, convergence, accommodation,
critical flicker frequency, contrast sensitivity,
binocular vision), and visual system and the assessment
of ergonomic conditions of workplaces provided with VDUs.
Results: The work at VDUs caused a statistically
considerable deterioration of convergence, accommodation,
near and distant phoria, contrast sensitivity and
critical flicker frequency.
Conclusions: The reduced efficiency of examined
functions may lead to visual discomfort of VDU operators.
The improvement of ergonomic conditions of workplaces
and individual adjustment of work-time has a favourable
effect on the reduction of reported eye discomforts. |
| Słowa kluczowe: |
wpływ pracy przy
monitorach ekranowych na układ wzrokowy, dyskomfort ze
strony oczu, badanie funkcji wzroku operatorów
komputerów (ostrość wzroku, refrakcja, konwergencja,
akomodacja, krytyczna częstotliwość migotania, czucie
kontrastu, widzenie obuoczne), ergonomiczna ocena
komputerowych miejsc pracy, wymagania wzrokowe dla
kandydatów do pracy na stanowiskach wyposażonych w
monitory komputerowe. |
| Key words: |
work with Visual Display
Units and its effect on the eye, eye discomfort,
examination of visual functions (visual acuity,
refraction, convergence, accommodation, critical flicker
frequency, contrast sensitivity, binocular vision),
ergonomic evaluation of workplaces provided with VDUs,
visual requirements for the candidates for the work with
VDU. |
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