Ding C, Sun B, Zheng Y
Department of Ophthalmology, Beijing Tongren Hospital, WHO Collaborating Center for Prevention of Blindness, Beijing Institute of Ophthalmology.
Zhonghua Yan Ke Za Zhi. 1997 Jul;33(4):286-8.
To evaluate the effects of tinted filter lens on the visual rehabilitation of blind and low vision patients induced by optic nerve atrophy, glaucoma and retinitis pigmentosa.
The contrast sensitivity of 22 cases with optic nerve atrophy (34 eyes), 17 glaucoma (30 eyes), 18 retinitis pigmentosa (30 eyes) and 30 normal people (60 eyes) with and without yellow and red filter lens was tested.
The results demonstrated that a yellow filter lens could improve the optic nerve atrophy patient's contrast sensitivity at 1.5, 3, 6 and 12 c/deg, while a red filter lens could increase the contrast sensitivity at limited spatial frequencies, but it could also decrease the contrast sensitivity at some other spatial frequencies.
Yellow filter lens could be applied as a non-optical visual aid in the visual rehabilitation of the blind and low vision patients induced by these three diseases, as the above results show contrast sensitivity improvement in the low spatial frequency and the peak of the contrast sensitivity curves.
评估有色滤光镜对视神经萎缩、青光眼和视网膜色素变性所致盲和低视力患者视觉康复的效果。
对22例视神经萎缩患者（34只眼）、17例青光眼患者（30只眼）、18例视网膜色素变性患者（30只眼）以及30名正常人（60只眼），分别测试佩戴和不佩戴黄色及红色滤光镜时的对比敏感度。
结果表明，黄色滤光镜可提高视神经萎缩患者在1.5、3、6和12 c/deg时的对比敏感度，而红色滤光镜在有限空间频率下可提高对比敏感度，但在其他一些空间频率下会降低对比敏感度。
上述结果显示黄色滤光镜可提高低空间频率下的对比敏感度并使对比敏感度曲线峰值升高，因此可作为这三种疾病所致盲和低视力患者视觉康复的非光学助视器应用。
