Daum K M, Good G, Tijerina L
School of Optometry, University of Alabama, Birmingham 35294.
J Am Optom Assoc. 1988 Sep;59(9):691-7.
Although the effects of using video display terminals (VDTs) have been examined from a number of perspectives, there has been relatively little study of the effect of small uncorrected refractive errors in the production of visual discomfort. The purpose of this study was to examine the level of six commonly assessed symptoms in a sample of 32 VDT operators via a questionnaire and to determine whether these were related to their habitual small refractive errors. The subjects reported substantial prevalence (55-81%) of each of the symptoms except double vision (16%). After a complete vision examination, the VDT operators were classified as relative myopes, hyperopes, astigmats or emmetropes. The criterion was a minimum of 0.50 D in the most ameotropic eye. Using this criterion, analysis showed that small refractive errors were significantly related to the reported level of symptoms of VDT operators. These results suggest the utility of proper refractive correction for the comfortable use of a VDT and the value of further research into this putative causal relationship.
尽管已从多个角度研究了使用视频显示终端（VDT）的影响，但对于小度数未矫正屈光不正导致视觉不适方面的研究相对较少。本研究的目的是通过问卷调查，在32名VDT操作员样本中，检查六种常见评估症状的程度，并确定这些症状是否与他们习惯性的小度数屈光不正有关。除复视（16%）外，受试者报告每种症状的发生率都很高（55%-81%）。经过全面的视力检查后，VDT操作员被分类为相对近视、远视、散光或正视。标准是在最屈光不正的眼中至少有0.50 D。使用该标准进行分析表明，小度数屈光不正与VDT操作员报告的症状程度显著相关。这些结果表明，适当的屈光矫正对于舒适使用VDT具有实用性，并且进一步研究这种假定的因果关系具有价值。
