多用户系统控制中寻呼员视觉机能的测评

Measurement and Evaluation of Visual Index in VDT Operators under Multi User System.

目的评价多用户系统控制中寻呼员的视觉机能状态，探讨视疲劳产生的原因。方法对寻呼员上午工作前和工作后的主观感觉进行了测评，并分别在８ ：１５ 、９ ：１５ 、１０ ：１５ 、１１ ：１５ 、１２ ：１５ 对闪光融合频率、动态视力和屈光度等视觉指标进行现场测试。结果作业过程中工作人员没有出现严重的视觉不舒适症状，对不同阶段测试结果进行两两比较，闪光融合频率、动态视力等指标没有下降；与８ ：１５ 所测结果比较，屈光度除右眼在１２ ：１５ 所测值下降达到显著水平外，其他均无显著差异。结论多用户系统控制中寻呼员的视觉机能状态保持良好，短暂而频繁的等待时间是保持视觉机能状态良好的重要原因。

Objective To evaluate the visual function of the visual display terminal(VDT) operaters under the Multi user system. Method Subjective symptoms of the VDT operators under the Multi user system were measured before and after work in the field study. Visual indices were measured at 8:15, 9:15, 10:15, 11:15, or 12:15 a.m. Result No discomfort symptom was observed during the working time, and Longitudino Kinetic visual acuity, and Critical flicker frequency didn't decrease. Refraction showed no significant decrease as compared with that at 8:15 except that of right eye measured at 12:15. Conclusion The Visual function of the VDT operators remained good in the Multi user's system.