Feĭgin A A, Zak P P, Korniushina T A, Rozenblium Iu Z
Vestn Oftalmol. 1998 Mar-Apr;114(2):34-6.
Color-contrast optic filters are developed for improving the color discriminating capacity of eyes exposed to video display terminals. These filters are applied as a coating on correcting or common glasses. Effects of such eyeglasses on visual functions accommodation, frequency-contrast sensitivity, and critical frequency of flashes fusion (CFFF) were studied in 23 PC users with visual acuity of 1.0 with correction. Wearing of eyeglasses with filters promoted shifting of the most distant point of clear vision further and increased the accommodation volume, contrast sensitivity at the low and decreased it at the medium and high frequencies. CFFF was not changed. Wearing of eyeglasses with filters for 4 h of working at a display caused shifting of the nearest and most distant points of clear vision in comparison with the control group with the accommodation volume unchanged and preserved the high contrast sensitivity at the mean and low frequencies during the entire period of work. No changes in CFFF were noted. After 4 weeks of using eyeglasses with spectral filters, 86.9% of volunteers noted an improvement of visual working capacity and 13.1% considered there was no difference. Hence, eyeglasses with spectral filters are recommended as an ophthalmological measure preventing visual fatigue during long work with video displays.
彩色对比光学滤光片是为提高接触视频显示终端的眼睛的辨色能力而研制的。这些滤光片作为涂层应用于矫正眼镜或普通眼镜上。在23名视力矫正后为1.0的电脑使用者中，研究了此类眼镜对视觉功能调节、频率对比敏感度和闪光融合临界频率（CFFF）的影响。佩戴带滤光片的眼镜使最远距离的清晰视觉点进一步后移，并增加了调节幅度，低频时对比敏感度增加，中高频时对比敏感度降低。CFFF没有变化。与对照组相比，在显示器前工作4小时佩戴带滤光片的眼镜使最近和最远距离的清晰视觉点发生移动，调节幅度不变，并且在整个工作期间平均和低频时保持高对比敏感度。未发现CFFF有变化。使用带光谱滤光片的眼镜4周后，86.9%的志愿者表示视觉工作能力有所改善，13.1%的志愿者认为没有差异。因此，推荐使用带光谱滤光片的眼镜作为一种眼科措施，以防止在长时间使用视频显示器工作时出现视觉疲劳。
