The most commonly reported ailment among VDU operators is eye-strain.视频显示器操作员中最常见的疾病是眼睛疲劳。I usually wear contact lenses, but I sometimes wear glasses when my eyes are tired.我通常戴隐形眼镜，但有时眼睛疲劳时会戴框架眼镜。A headache is sometimes indicative of eyestrain.头痛有时表明眼睛疲劳了。