Ray N J, Fowler S, Stein J F
Dyslexia Research Trust, Dept. of Physiology, University of Oxford, Parks Road, Oxford, OX1 3PT, UK.
Ann N Y Acad Sci. 2005 Apr;1039:283-93. doi: 10.1196/annals.1325.027.
The magnocellular system plays an important role in visual motion processing, controlling vergence eye movements, and in reading. Yellow filters may boost magnocellular activity by eliminating inhibitory blue input to this pathway. It was found that wearing yellow filters increased motion sensitivity, convergence, and accommodation in many children with reading difficulties, both immediately and after three months using the filters. Motion sensitivity was not increased using control neutral density filters. Moreover, reading-impaired children showed significant gains in reading ability after three months wearing the filters compared with those who had used a placebo. It was concluded that yellow filters can improve magnocellular function permanently. Hence, they should be considered as an alternative to corrective lenses, prisms, or exercises for treating poor convergence and accommodation, and also as an aid for children with reading problems.
大细胞系统在视觉运动处理、控制双眼会聚眼球运动以及阅读中发挥着重要作用。黄色滤光片可以通过消除该通路中抑制性的蓝色输入来增强大细胞的活动。研究发现，许多阅读困难的儿童佩戴黄色滤光片后，无论是立即佩戴还是使用三个月后，运动敏感性、会聚能力和调节能力都有所提高。使用对照中性密度滤光片时，运动敏感性并未增加。此外，与使用安慰剂的儿童相比，阅读障碍儿童在佩戴滤光片三个月后阅读能力有显著提高。研究得出结论，黄色滤光片可以永久性地改善大细胞功能。因此，对于治疗会聚和调节能力差的问题，黄色滤光片应被视为矫正镜片、棱镜或训练的替代方法，同时也可作为阅读困难儿童的辅助工具。
