Effect of spectral overlays on visual parameters and reading ability: an integrative review
Efeito das lâminas espectrais ( overlays ) em parâmetros visuais e na habilidade de leitura: revisão integrativa
Douglas de Araújo Vilhena; Márcia Reis Guimarães; Ricardo Queiroz Guimarães; Ângela Maria Vieira Pinheiro
Abstract
Purpose: to provide an integrative review of indexed articles published from 2009 to 2019 on the effect of spectral overlays on visual parameters and reading ability.
Methods: keywords were used to search seven databases. Duplicate entries, reviews, literature reviews, editor’s comments, and congress abstracts were excluded, as well as papers that were not relevant, based on their titles and abstracts. A total of 52 articles, which were read in full, were eligible at this stage. Of these, 12 articles, published in Portuguese or English from 2009 to 2019, were included.
Results: all 12 articles included evaluated the effect of overlays on the reading rate. There was an improvement in different visual parameters (ocular accommodation and eye movement), facial recognition, and reading (reading rate, relative efficiency, and comprehension). The use of overlays reduced visual stress regardless of refractive, orthoptic or cognitive disorders. The associated conditions investigated were autism spectrum disorder, Tourette syndrome, stroke, deafness, dyslexia, and auditory temporal processing disorder.
Conclusion: the effectiveness of overlays in improving reading quality is consistently demonstrated in the literature. The reviewed articles showed that the overlays’ effect is more expressive when the visual stress is associated with conditions that present sensory alterations and cortical hyperactivity.
Keywords
Resumo
Objetivo: oferecer uma revisão integrativa dos artigos indexados publicados de 2009 a 2019 sobre o efeito das lâminas espectrais (overlays) em parâmetros visuais e na habilidade de leitura.
Métodos: utilizou-se a pesquisa de palavras-chave em sete bancos de dados. Foram excluídos registros duplicados, revisões de literatura, resenhas, comentários do editor, resumos de congressos, e os não pertinentes de acordo com os títulos e resumos. Os 52 artigos sobre o uso dos overlays no estágio de elegibilidade foram lidos na íntegra. Foram incluídos 12 artigos completos, publicados em português ou em inglês entre 2009-2019.
Resultados: os 12 artigos incluídos avaliaram o efeito dos overlays na taxa de leitura. Houve melhora em diferentes parâmetros visuais (acomodação, movimentação ocular), no reconhecimento facial e em leitura (taxa de leitura, eficiência relativa e em compreensão). Independentemente de problemas refracionais, ortópticos ou cognitivos, o uso dos overlays reduziu o estresse visual. As condições associadas investigadas foram o transtorno do espectro autista, síndrome de Tourette, acidente vascular cerebral, surdez, dislexia, e alteração no processamento auditivo temporal.
Conclusão: a eficácia dos overlays na melhora da qualidade de leitura foi demonstrada de forma consistente na literatura. Os artigos revisados verificaram que os overlays apresentam efeito mais expressivo quando o estresse visual está associado às condições que apresentam alterações sensoriais e à hiperatividade cortical.
Palavras-chave
Referencias
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Submitted date:
20/12/2019
Accepted date:
23/03/2020
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