The change in colour critical flicker fusion (CFF) values and accommodation times during experimental repetitive tasks with CRT display screens.

@article{Iwasaki1989TheCI,
  title={The change in colour critical flicker fusion (CFF) values and accommodation times during experimental repetitive tasks with CRT display screens.},
  author={Tsuneto Iwasaki and S. Kurimoto and Kageyu Noro},
  journal={Ergonomics},
  year={1989},
  volume={32 3},
  pages={
          293-305
        }
}
Two groups of normal subjects were loaded an experimental visual task, or a calculating and discriminating task, on a CRT display screen under different work speeds and amounts. The colour (red, green and yellow) CFF values of the subjects were measured every 15 min during the task and their accommodative function, represented by the accommodation time, was measured before and after the task. The two groups of subjects showed no significant differences in the pattern of change in the colour CFF… 
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References

SHOWING 1-10 OF 29 REFERENCES
Eye-strain and changes in accommodation of the eye and in visual evoked potential following quantified visual load.
TLDR
The results showed that the relaxation time in accommodation lengthened and the latency of the positive wave appearing at about 100 ms in VEP increased with the increase in visual load.
The effects of task performance on ocular accommodation and perceived size.
Two studies were conducted to test the hypothesis that performance of cognitive tasks tends to induce outward shifts in ocular accommodation that, in turn, result in changes in perceived size. In the
Influence of VDT (visual display terminals) work on eye accommodation.
TLDR
Experiments showed that visual tasks in VDT work might induce temporary effects in the visual accommodation system, and changes in the accommodative function were found with statistical significance in the smaller-size character group but tended to deteriorate in the larger- size character group.
[Effects of visual and mental strain on VDT (visual display terminal) performance].
TLDR
The progression of visual and mental strain in VDT work was investigated through an experimentally-designed VDT task providing a number of stressors including pacing, repetition, judgment and output decisions to measure the effects of CFF, TAF, EEG, and near-point accommodation of various changes in the duration of the testing period.
Age, degraded viewing environments, and the speed of accommodation.
TLDR
Results indicated that the time to accommodate from a near to infinity target varied as a function of age, room illumination, and the distance of the near-reading task; however, during degraded viewing conditions, the accommodation time for older subjects increased as much as tenfold.
Objective evaluation of eye strain using measurements of accommodative oscillation.
TLDR
The results suggest that measurement of changes in accommodative oscillation, particularly the low-frequency component (0 to 15 Hz), may provide an objective parameter of eye strain.
Effects of Repetitive Tasks with Different Degrees of Difficulty on Critical Fusion Frequency (CFF) and Subjective State
Abstract Critical Fusion Frequency (CFF) and subjective state assessed by questionnaires were determined on 18 subjects during three different types of repetitive tasks of three hours duration. The
Reaction and Response Times for Accommodation
Abstract Using an infra‐red dynamic optometer, a qualitative comparison of the accommodation responses of two observers to step changes in target position showed marked differences in their ability
FLICKER FUSION IN MULTIPLE SCLEROSIS
TLDR
A study of thresholds of critical flicker fusion frequency (C.F.) of a light stimulus in patients suffering from multiple sclerosis and the relation between C.F. and visual acuity and the visual fields in multiple sclerosis is also of considerable interest.
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