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Binocular adaptation to near addition lenses in emmetropic adults

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dc.contributor.authorSreenivasan, Vidhyapriya
dc.contributor.authorIrving, Elizabeth
dc.contributor.authorBobier, William
dc.date.accessioned2017-05-01T14:43:31Z
dc.date.available2017-05-01T14:43:31Z
dc.date.issued2008-05
dc.descriptionThe final publication is available at Elsevier via https://doi.org/10.1016/j.visres.2008.02.015 © 2008. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.description.abstractNear addition lenses are prescribed to pre-presbyopic individuals for treatment of binocular motor problems such as convergence excess and to control the progression of myopia. To date, no investigation has looked at the complete sequence of binocular motor responses during a period of near work with +2 D lenses. This investigation evaluated changes to accommodation and vergence responses when young adults sustained fixation at 33 cm with +2 D addition lenses. In addition, the effect of the accommodative vergence cross-link (AV/A) on the magnitude and the completeness of binocular adaptation to these lenses were evaluated. The results showed that +2 D lenses initiate an increase in exophoria and convergence driven accommodation. The degree of the initial induced phoria was dependant upon the magnitude of the AV/A ratio. Vergence adaptation occurred after 3 min of near fixation and reduced the exophoria and convergence driven accommodation. The magnitude of vergence adaptation was dependant upon the size of the induced phoria and hence the AV/A ratio. The completeness of adaptation was seen to vary inversely with induced exophoria and thus the AV/A ratio.en
dc.description.sponsorshipThis study was supported by grants from Canada Foundation for Innovation; NSERC Canada (E.L.I., W.R.B.); CLLRnet (W.R.B.), CRC and PREA (E.L.I.).en
dc.identifier.urihttps://doi.org/10.1016/j.visres.2008.02.015
dc.identifier.urihttp://hdl.handle.net/10012/11829
dc.language.isoenen
dc.publisherElsevieren
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectNear addsen
dc.subjectVergence adaptationen
dc.subjectAccommodative vergence cross-linken
dc.subjectNear worken
dc.subjectAccommodationen
dc.titleBinocular adaptation to near addition lenses in emmetropic adultsen
dc.typeArticleen
dcterms.bibliographicCitationSreenivasan, V., Irving, E. L., & Bobier, W. R. (2008). Binocular adaptation to near addition lenses in emmetropic adults. Vision Research, 48(10), 1262–1269. https://doi.org/10.1016/j.visres.2008.02.015en
uws.contributor.affiliation1Faculty of Scienceen
uws.contributor.affiliation2School of Optometry and Vision Scienceen
uws.peerReviewStatusRevieweden
uws.scholarLevelFacultyen
uws.typeOfResourceTexten

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