Suttle Catherine M, Lawrenson John G, Conway Miriam L
Centre for Applied Vision Research, School of Health Sciences, City, University of London, London, UK.
Clin Exp Optom. 2018 Jul;101(4):514-520. doi: 10.1111/cxo.12676. Epub 2018 Apr 6.
Coloured overlays or lenses are widely available for use by children and adults with difficulties or discomfort while reading. In recent years, systematic reviews have been conducted in an attempt to establish the strength of the evidence base for this intervention. The aim of this overview is to systematically review these reviews. The methodology was published prospectively as a protocol (Prospero CRD42017059172). Online databases Medline, Cinahl, Embase and the Cochrane Library were searched for systematic reviews on the efficacy of coloured overlays or lenses for the alleviation of reading difficulty or discomfort. Included studies were appraised using the AMSTAR 2 checklist. Characteristics of included studies such as aspects of methods, results and conclusions were recorded. Both processes were conducted independently by two reviewers and any discrepancies were resolved by discussion. Thirty-one studies were found via databases and other sources. After excluding duplicates and those not fitting the inclusion criteria, four reviews were included in the analysis. While all reviews were systematic, their methodology, results and conclusions differed. Three of the four concluded that there is insufficient good quality evidence to support the use of coloured overlays or lenses for reading difficulty, while one concluded that, despite research limitations, the evidence does support their use. On balance, systematic reviews to date indicate that there is not yet a reliable evidence base on which to recommend coloured overlays or lenses for the alleviation of reading difficulty or discomfort. High quality, low bias research is needed to investigate their effectiveness in different forms of reading difficulty and discomfort for adults and children.
彩色覆盖物或镜片广泛可供有阅读困难或不适的儿童和成人使用。近年来，已进行了系统评价，试图确立这一干预措施的证据基础的力度。本综述的目的是对这些评价进行系统回顾。该方法作为一项方案（Prospero CRD42017059172）前瞻性发表。检索了在线数据库Medline、Cinahl、Embase和Cochrane图书馆，以查找关于彩色覆盖物或镜片缓解阅读困难或不适效果的系统评价。使用AMSTAR 2清单对纳入的研究进行评估。记录纳入研究的特征，如方法、结果和结论等方面。这两个过程均由两名评价员独立进行，任何差异均通过讨论解决。通过数据库和其他来源共找到31项研究。在排除重复项和不符合纳入标准的研究后，四项评价被纳入分析。虽然所有评价都是系统性的，但其方法、结果和结论各不相同。四项评价中有三项得出结论，即没有足够的高质量证据支持使用彩色覆盖物或镜片来解决阅读困难，而有一项得出结论，尽管存在研究局限性，但证据确实支持其使用。总体而言，迄今为止的系统评价表明，尚无可靠的证据基础来推荐使用彩色覆盖物或镜片来缓解阅读困难或不适。需要开展高质量、低偏倚的研究，以调查其对成人和儿童不同形式阅读困难和不适的有效性。
