Aakre Bente Monica, Doughty Michael J
Buskerud University College, Department of Optometry and Visual Science, Frogsvei 41, 3611 Kongsberg, Norway.
Cont Lens Anterior Eye. 2007 Jul;30(3):174-82. doi: 10.1016/j.clae.2007.01.001. Epub 2007 Feb 12.
To assess the reliability of self-reported symptoms of asthenopia associated with VDT use (as characterized by general visual symptoms, headache and specific ocular symptoms) for both continuing soft contact lens (SCL) wearers and former SCL wearers who had undergone successful laser-in-situ-keratomileusis (LASIK) surgery.
Forty generally healthy adults, aged between 24 and 44 years, were asked to complete a 13 page questionnaire that included requests for information on general visual symptoms, headache and specific ocular symptoms such as dry eye associated with VDT use. The adults were either long term successful soft contact lens wearers (n=20) or a similar group who had then undergone successful LASIK refractive surgery for myopia 2 years prior to the questionnaire being provided.
Most subjects (70%) reported experiencing some visual symptoms sometimes, 62.5% reported headaches sometimes, and 82.5 % reported specific ocular symptoms sometimes. There were no obvious differences between the two groups either in the reported frequency or severity (by visual analogue scale, VAS) of visual symptoms, headache or specific ocular symptoms. However, while the reporting of headache showed no obvious association with the number of specific ocular symptoms reported, the latter showed a clear correlation with the reporting of the severity of visual symptoms (p<0.001).
The results indicate that when an individual reports visual symptoms, they may actually be providing recall of specific ocular symptoms. Therefore, contrary to an often common practice, visual symptoms should be assessed separately to specific ocular symptoms such that the appropriate management can be selected. The results also indicate that previous contact lens wearers who have undergone successful LASIK are still likely to experience some visual and specific ocular symptoms when undertaking computer based work on a regular basis.
为评估持续佩戴软性隐形眼镜（SCL）者和曾成功接受准分子原位角膜磨镶术（LASIK）的 former SCL 佩戴者中，与视频显示终端（VDT）使用相关的视疲劳自我报告症状（以一般视觉症状、头痛和特定眼部症状为特征）的可靠性。
40 名年龄在 24 至 44 岁之间的一般健康成年人被要求完成一份 13 页的问卷，其中包括有关一般视觉症状、头痛和特定眼部症状（如与 VDT 使用相关的干眼）的信息请求。这些成年人要么是长期成功佩戴软性隐形眼镜者（n = 20），要么是在提供问卷前 2 年因近视成功接受 LASIK 屈光手术的类似群体。
大多数受试者（70%）报告有时会出现一些视觉症状，62.5%报告有时会头痛，82.5%报告有时会出现特定眼部症状。两组在视觉症状、头痛或特定眼部症状的报告频率或严重程度（通过视觉模拟量表，VAS）方面均无明显差异。然而，虽然头痛的报告与特定眼部症状的报告数量没有明显关联，但后者与视觉症状严重程度的报告显示出明显的相关性（p<0.001）。
结果表明，当个体报告视觉症状时，他们实际上可能是在回忆特定的眼部症状。因此，与通常的常见做法相反，视觉症状应与特定眼部症状分开评估，以便选择适当的治疗方法。结果还表明，曾成功接受 LASIK 的前隐形眼镜佩戴者在定期进行基于计算机的工作时，仍可能会出现一些视觉和特定眼部症状。
