Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/90245
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dc.contributorSchool of Optometryen_US
dc.contributorDepartment of Biomedical Engineeringen_US
dc.creatorDe Lestrange-Anginieur, Een_US
dc.creatorLeung, TWen_US
dc.creatorKee, CSen_US
dc.date.accessioned2021-05-26T09:09:43Z-
dc.date.available2021-05-26T09:09:43Z-
dc.identifier.urihttp://hdl.handle.net/10397/90245-
dc.language.isoenen_US
dc.publisherPergamon Pressen_US
dc.rights© 2021 Elsevier Ltd. This article is made available under the Elsevier license (http://www.elsevier.com/open-access/userlicense/1.0/).en_US
dc.rightsThe following publication De Lestrange-Anginieur, E., Leung, T. W., & Kee, C. S. (2021). Joint effect of defocus blur and spatial attention. Vision Research, 185, 88-97 is available at https://dx.doi.org/10.1016/j.visres.2021.04.002.en_US
dc.subjectSpatial covert attentionen_US
dc.subjectEndogenous attentionen_US
dc.subjectOcular aberrationsen_US
dc.subjectDefocus bluren_US
dc.subjectSpatial resolutionen_US
dc.subjectLandolt Cen_US
dc.subjectRefractive gainen_US
dc.titleJoint effect of defocus blur and spatial attentionen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage88en_US
dc.identifier.epage97en_US
dc.identifier.volume185en_US
dc.identifier.doi10.1016/j.visres.2021.04.002en_US
dcterms.abstractDefocus blur and spatial attention both act on our ability to see clearly over time. However, it is currently unknown how these two factors interact because studies on spatial resolution only focused on the separate effects of attention and defocus blurs. In this study, eleven participants performed a resolution acuity task along the diagonal 135˚/315˚ with horizontal, at 8˚ eccentricity for clear and blurred Landolt C images under various manipulations of covert endogenous attention. All the conditions were interleaved and viewed binocularly on a visual display. We observed that attention not just improves the resolution of clear stimuli, but also modulates the resolution of defocused stimuli for compensating the loss of resolution caused by retinal blur. Our results show, however, that as the degree of attention decreases, the differences between clear and blurred images largely diminish, thus limiting the benefit of an image quality enhancement. It also appeared that attention tends to enhance the resolution of clear targets more than blurred targets, suggesting potential variations in the gain of vision correction with the level of attention. This demonstrates that the interaction between spatial attention and defocus blur can play a role in the way we see things. In view of these findings, the development of adaptive interventions, which adjust the eye’s defocus to attention, may hold promise.en_US
dcterms.bibliographicCitationVision research, Aug. 2021, v. 185, p. 88-97en_US
dcterms.isPartOfVision researchen_US
dcterms.issued2021-08-
dc.identifier.pmid33964585-
dc.identifier.eissn1878-5646en_US
dc.description.validate202105 bcvcen_US
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumbera0889-n01-
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextRGC: This was partially supported by Innovation and Technology Funding ITF-ITSP-Tier 2. ITS/164/16FX.en_US
dc.description.fundingTextOthers: P0011783en_US
dc.description.pubStatusPublisheden_US
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