The article examines the factors of visual work of a computer set operator (CSO) that affect his work productivity. The main stages of the CSO work process are analyzed. It is noted that a significant part of the CSO working time is spent on visual work. The objects on which the CSO work is focused are determined. It is established that the main factors of the CSO visual work are the level of illumination of the object of distinction, the contrast between the object of distinction and the background, the characteristics of the background and the size of the object of distinction. The nature of the influence of the abovementioned factors on the CSO work productivity is a subject of research. It was established that the level of illumination of the object of distinction and its size, which depends on the font size and typeface, significantly affect the productivity of the CSO. With an increase in the contrast of the object of distinction and the background, the productivity of the CSO increases, but not so significantly. The analysis of the obtained research results was carried out and numerical indicators of a kind of ‘comfortable’ zone of factors of the visual work of the CSO were determined, under which the operator performs his work with high work productivity:
– original illumination level – from 300 to 600 lux;
– font size on the original – from 11 to 14;
– contrast of the object of distinction and the background – from 0.3 to 0.6.
If these numerical indicators are lower than the defined values of the ‘comfort’ zone, then the productivity of the workers is significantly reduced (by 2040%) and they experience a feeling of ‘visual’ discomfort (according to the subjective assessments of the workers). It is impractical from an economic point of view to increase the numerical indicators of the factors of the visual work of the workers above the values of the ‘comfort’ zone.
The obtained conclusions can be useful for developing recommendations aimed at improving the conditions of the visual work of the CSO, which would provide a positive impact on his health and working capacity.
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