Psychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lenses

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dc.citation.issue2
dc.citation.volume6
dc.contributor.authorda Costa, Marcelo Fernandes
dc.contributor.authorParanhos Junior, Augusto [UNIFESP]
dc.contributor.authorLottenberg, Claudio Luiz
dc.contributor.authorCastro, Leonardo Cunha [UNIFESP]
dc.contributor.authorVentura, Dora Fix
dc.coverageCham
dc.date.accessioned2020-09-01T13:21:13Z
dc.date.available2020-09-01T13:21:13Z
dc.date.issued2017
dc.description.abstractThe purpose of this study was to measure luminance contrast sensitivity and color vision thresholdfs in normal subjects using a blue light filter lens and transparent intraocular lens material. Monocular luminance grating contrast sensitivity was measured with Psycho for Windows (version 2.36; Cambridge Research Systems) at 3.0, 6.0, 12.0, 20.0, and 30.0 cycles per degree of visual angle (cpd) in 15 normal subjects (eight female), with a mean age of 21.6 years (SD = 3.8 years). Chromatic discrimination was assessed with the Cambridge colour test (CCT) along the protan, deutan, and tritan color confusion axes. Both tests were performed in a darkened room under two situations: with a transparent lens and with blue light filter lens. Subjective impressions were taken by subjects regarding their visual experience under both conditions. No difference was found between the luminance contrast sensitivity measured with transparent and blue light filter. However, 13/15 (87%) of the subjects reported more comfortable vision with the blue filter. In the color vision test, tritan thresholds were significantly higher for the blue filter compared with the transparent filter (p = 0.003). For protan and deutan thresholds no differences were found. Blue-yellow color vision is impaired with the blue light filter, and no impairment occurs with the transparent filter. No significant differences in thresholds were found in the luminance contrast sensitivity comparing the blue light and transparent filters. The impact of short wavelength light filtering on intrinsically photosensitive retinal ganglion cells is also discussed.en
dc.description.affiliationUniv Sao Paulo, Dept Psicol Expt, Inst Psicol, Sao Paulo, Brazil
dc.description.affiliationUniv Sao Paulo, Nucleo Neurociencias & Comportamento & Neurocienc, Sao Paulo, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Dept Oftalmol, Sao Paulo, Brazil
dc.description.affiliationHosp Israelita Albert Einstein, Sao Paulo, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Dept Oftalmol, Sao Paulo, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFAPESP Projeto Tematico
dc.description.sponsorshipFINEP
dc.description.sponsorshipCNPq
dc.description.sponsorshipIDFAPESP Projeto Tematico: 02/12733-8
dc.description.sponsorshipIDFINEP: 66.95.0407.00
dc.description.sponsorshipIDCNPq: 523303/95-5
dc.format.extent301-312
dc.identifierhttp://dx.doi.org/10.1007/s40123-017-0101-y
dc.identifier.citationOphthalmology And Therapy. Cham, v. 6, n. 2, p. 301-312, 2017.
dc.identifier.doi10.1007/s40123-017-0101-y
dc.identifier.fileWOS000415873600009.pdf
dc.identifier.issn2193-8245
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/58133
dc.identifier.wosWOS:000415873600009
dc.language.isoeng
dc.publisherSpringer International Publishing Ag
dc.relation.ispartofOphthalmology And Therapy
dc.rightsAcesso aberto
dc.subjectBlue filter IOLen
dc.subjectChromatic filteringen
dc.subjectChromaticity discriminationen
dc.subjectColor vision impairmenten
dc.subjectLuminance contrast sensitivityen
dc.titlePsychophysical Measurements of Luminance Contrast Sensitivity and Color Discrimination with Transparent and Blue-Light Filter Intraocular Lensesen
dc.typeArtigo
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