Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/20704
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Lopez-Gil, Norberto | - |
dc.contributor.author | Matos, Sofia Cláudia Peixoto de | - |
dc.contributor.author | Thibos, Larry N | - |
dc.contributor.author | González-Méijome, José Manuel | - |
dc.date.accessioned | 2012-11-07T11:16:30Z | - |
dc.date.available | 2012-11-07T11:16:30Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 1534-7362 | por |
dc.identifier.uri | https://hdl.handle.net/1822/20704 | - |
dc.description.abstract | First described during the 18th century, the cause of night myopia remains a controversial topic. Whereas several explanations have been suggested in the literature, particularly related with accommodation or chromatic shift in scotopic light conditions, no definitive explanation for its aetiology has been provided. We describe an experiment in which ocular refractive state was objectively and subjectively measured while viewing two kind of stimulus: letters on a bright background and a punctual source of light in a dark background. We found that under photopic conditions the optimum refractive state of the accommodating eye is significantly more myopic when maximizing perceived quality of a point source on a dark background compared to a conventional letter chart with black letters on a white background. Optical modeling suggested this difference in refractive state is due to spherical aberration. Since isolated point sources are more likely encountered at night, whereas extended objects are more likely encountered in the daytime, our results suggest that a significant part of the night myopia phenomenon is determined by the nature of the visual stimulus and the visual task used to assess ocular refractive state. | por |
dc.description.sponsorship | Fundación Séneca (Region de Murcia), Spain - bolsa 05832/PI/07, 5312/PI/10 | por |
dc.description.sponsorship | Fundação para a Ciência e a Tecnologia (FCT) - (Projects: PTDC/SAU-BEB/098392/2008, PTDC/SAU-BEB/098391/2008). | por |
dc.language.iso | eng | por |
dc.publisher | Association for Research in Vision and Ophthalmology (ARVO) | por |
dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/98392/PT | - |
dc.rights | openAccess | por |
dc.subject | Night myopia | por |
dc.subject | Mesopic vision | por |
dc.subject | Accommodation | por |
dc.subject | Dark focus | por |
dc.subject | spherical aberration | por |
dc.title | Shedding light on night myopia | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://www.journalofvision.org/ | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 1 | por |
oaire.citationEndPage | 9 | por |
oaire.citationIssue | 5 | por |
oaire.citationTitle | Journal of Vision | por |
oaire.citationVolume | 12 | por |
dc.identifier.doi | 10.1167/12.5.4 | por |
dc.identifier.pmid | 22593090 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of Vision | por |
Aparece nas coleções: | CDF - OCV - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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5.5.71. LOPEZ-GIL_12_JoV (Night Myopia).pdf | PDF version | 429,4 kB | Adobe PDF | Ver/Abrir |