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https://hdl.handle.net/1822/8362
Título: | Influence of fogging lenses and cycloplegia on open-field automatic refraction |
Autor(es): | Queirós, A. González-Méijome, José Manuel Jorge, Jorge |
Palavras-chave: | Open-field autorefraction Fogging lenses Cycloplegia GrandSeiko |
Data: | 2008 |
Editora: | Blackwell Publishing |
Revista: | Ophthalmic and Physiological Optics |
Citação: | Ophthalmic and Physiological Optics. ISSN 0275-5408. 28:4 (Jul. 2008) 387-392. |
Resumo(s): | Purpose: To compare refractive values measured without cycloplegia, cycloplegia and fogging lenses using an open-field auto-refractor. Methods: One hundred and forty-two young adults were enrolled from a university population; 96 were female (67.6%) and 46 were male (32.4%), the age range was 18 to 26 years (mean 22.3 ± 3.7 years). The refraction measurement was obtained with autorefractor Grand Seiko Auto Ref/Keratometer WAM-5500 (GS) under three conditions, always in this sequence: 1) without cycloplegia (GS), 2) without cycloplegia but using a +2.00D fogging lens (GS_2D) and 3) with cycloplegia (GS_cycl). Results: When the average values of spherical equivalent were compared both accommodation control strategies were almost equally successful: GS, M= -0.85 ± 2.21 D; GC_2D, M= -0.53 ± 2.10 D and GS_cycl, M= -0.57 ± 2.24 D (Kruskal-Wallis Test, p<0.001). When the results were analyzed separately for different refractive groups, emmetropes and hyperopes show statistically significant differences while myopes did not. When both accommodation strategies were compared there was a trend for more myopic subject to display more negative values under cycloplegia, while low myopes, emmetropes and hyperopes tend to display more negative values with the +2.00 D fogging lenses (less effectiveness of accommodation control). Conclusions: Over-refraction through +2.00 D fogging lenses is useful to achieve additional relaxation of the accommodative response in a similar way than cycloplegia when open-field autorefraction is performed in young adults. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/8362 |
DOI: | 10.1111/j.1475-1313.2008.00579.x |
ISSN: | 0275-5408 |
Versão da editora: | http://www.blackwellpublishing.com/journal.asp?ref=0275-5408 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - OCV - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Influence of fogging lenses and cycloplegia on open-field automatic refraction.pdf | manuscript | 139,03 kB | Adobe PDF | Ver/Abrir |