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Procedures for measuring the near point of convergence and the point of asthenopia in individuals with and without postural deficiency syndrome

2022-06Conference object Open access
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dc.contributor.authorDolan, Ana
dc.contributor.authorPoças, Ilda Maria
dc.contributor.authorSilva, O. A.
dc.contributor.authorSilva, Carina
dc.contributor.authorBarros, A. S.
dc.contributor.authorFirmino, A.
dc.contributor.authorMartins, J.
dc.contributor.authorVasco, H.
dc.contributor.authorMendanha, Luís
dc.date.accessioned2023-08-01T09:45:38Z
dc.date.available2023-08-01T09:45:38Z
dc.date.issued2022-06
dc.description.abstractPurpose: Postural Deficiency Syndrome is a multifactorial proprioceptive dysfunction with varied signs and symptoms, including convergence insufficiency and asthenopia which impact visual performance. The near point of convergence measurement is used to diagnose and clinically explore convergence insufficiency. Test speed and stimulus size influence values obtained. The definition of the most effective method to measure the near point of convergence and the point of asthenopia will allow early detection of alterations. This study aims to investigate the accuracy of measurements and variations in values obtained using different methods for the near convergence point and the point of asthenopia measurements in cases of Postural Deficiency Syndrome. Methods: The sample contained 39 patients, 27 with and 12 without Postural Deficiency Syndrome, measuring the near point of convergence and point of asthenopia with two stimuli (standard RAF rule and modified RAF rule) at two speeds (1cm/s and 3cm/s). Results: Neither method of measuring the near point of convergence had statistically significant values. The RAF near point rule at 1cm/s is more sensitive for alterations in the point of asthenopia (AUC 0.761 ± 0.084 standard error, p = 0.010). At 1cm/s, higher values for near point of convergence and point of asthenopia were measured, chiefly in the Postural Deficiency Syndrome group. Conclusion: Methods used to measure the parameters studied influenced the final values. No statistically significant values were obtained in the measurement of the near convergence point. To measure the point of asthenopia, the standard RAF rule at 1cm/s has the highest accuracy.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDolan A, Poças IM, Silva OA, Silva C, Barros AS, Firmino A, Martins J, Vasco H, Mendanha L. Procedures for measuring the near point of convergence and the point of asthenopia in individuals with and without postural deficiency syndrome. In: IOA Congress Virtual 2022 – XIVth International Orthoptic Association Congress, June 9-11, 2022.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/16348
dc.language.isoporpt_PT
dc.peerreviewedyespt_PT
dc.relation.publisherversionhttps://az659834.vo.msecnd.net/eventsairwesteuprod/production-delegatereg-public/fd48d35a0b7a4f6bbe9eda7086a6dfeept_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectOrthopticspt_PT
dc.subjectNear point of convergencept_PT
dc.subjectPoint of asthenopiapt_PT
dc.subjectPostural deficiency syndromept_PT
dc.titleProcedures for measuring the near point of convergence and the point of asthenopia in individuals with and without postural deficiency syndromept_PT
dc.typeconference object
dspace.entity.typePublication
person.familyNamePoças
person.familyNameSilva
person.familyNameMendanha Dias
person.givenNameIlda Maria
person.givenNameCarina
person.givenNameLuís
person.identifier.ciencia-id1E1A-86A4-BC50
person.identifier.ciencia-id2411-5936-0820
person.identifier.orcid0000-0002-1695-3231
person.identifier.orcid0000-0003-1021-7935
person.identifier.orcid0000-0001-8430-1780
person.identifier.scopus-author-id55258764900
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublicationced35a9f-848a-49c9-91dc-f60f679f149f
relation.isAuthorOfPublication81a5cd80-1982-43ba-bde5-4c43ae0e5234
relation.isAuthorOfPublication65b4bf1c-eaa5-4a81-b5e3-92e0dedbf9e2
relation.isAuthorOfPublication.latestForDiscovery81a5cd80-1982-43ba-bde5-4c43ae0e5234

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