Evans B J, Drasdo N
Department of Vision Sciences, Aston University, Birmingham, UK.
Ophthalmic Physiol Opt. 1991 Jul;11(3):206-17.
Research relating to the use of Irlen tinted lenses and coloured overlays for underachievers is reviewed. Many of the studies were not published in refereed journals and were methodologically poor. The weaknesses of the Irlen argument are discussed, including the absence of evidence to support the claims that these tints need to be uniquely prescribed and manufactured. Syntonics is another form of visual colour therapy that has been applied to those with a learning disability. Research on this is reviewed, and is also shown to have procedural irregularities which preclude firm conclusions. Owing to the poor quality of much of this research the claims of the protagonists of these therapies cannot be proved or disproved. A proposed new therapy is normally preceded by a valid theoretical hypothesis; this has been lacking in the present topic. Recently, a feasible explanation has been proposed in terms of 'pattern glare' resulting from mild hypersensitivity to epileptogenic patterns. This, together with potential alternative theories, is discussed. In the conclusion of this review, advice is given for eye-care practitioners who may be consulted on these therapies.
本文回顾了有关使用爱尔伦变色镜片和彩色覆盖物帮助学习成绩不佳者的研究。许多研究并未发表在经同行评审的期刊上，且方法存在缺陷。文中讨论了爱尔伦理论的弱点，包括缺乏证据支持这些色调需要独特定制和生产的说法。视功能训练仪疗法是另一种已应用于学习障碍者的视觉色彩疗法。本文回顾了对此疗法的研究，其也存在程序不规范的问题，这使得难以得出确凿结论。由于大部分此类研究质量较差，这些疗法支持者的说法无法得到证实或证伪。一种新疗法通常先要有一个有效的理论假设；而目前这个主题缺乏这一点。最近，有人根据对致痫模式的轻度过敏导致的“图案眩光”提出了一种可行的解释。本文将对此以及潜在的其他理论进行讨论。在这篇综述的结论部分，为可能就这些疗法提供咨询的眼科护理从业者提供了建议。
