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dc.contributor.authorVega Lerín, Fidel
dc.contributor.authorAlba Bueno, Francisco
dc.contributor.authorMillán Garcia-Varela, M. Sagrario
dc.contributor.authorVarón Puentes, Maria Consuelo
dc.contributor.authorGil Arnal, Miguel Ángel
dc.contributor.authorBuil Calvo, José Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Òptica i Optometria
dc.identifier.citationVega, F., Alba, F., Millan, M., Varon, M., Gil , M., Buil, J. Halo and Through-Focus Performance of Four Diffractive Multifocal Intraocular Lenses. "Investigative ophthalmology and visual science", 05 Maig 2015, vol. 56, núm. 6, p. 3967-3975.
dc.description.abstractPURPOSE. To compare, as a function of pupil size, the through-focus performance and halo features of four diffractive intraocular lenses (IOLs). METHODS. Three diffractive bifocal IOLs (ReSTOR þ2.5 D SV25T0, Tecnis þ2.75 D ZKB00, and AT LISA þ3.75 D 809M) and a diffractive trifocal IOL (AT LISA tri þ3.33 D, þ1.66 D 839MP) were tested in vitro in a modified International Organization for Standardization eye model. The modulation transfer function (MTF) at the IOLs’ foci was obtained with pupils ranging from 2.0 to 5.0 mm. Through-focus MTF curves (at 50 cycles/mm) were compared among all the IOLs. The halo formation and characteristics were obtained from image analysis. RESULTS. The multifocal IOLs studied in this work showed, at their foci, secondary out-of-focus images, which originate halos and whose characteristics depend on the lens design and pupil size. The smallest halo occurred for the distance focus of the SV25T0. The distance and near foci of the SV25T0 yielded, respectively, the best and lowest optical quality among the studied IOLs. The distance focus of the ZKB00, AT LISA, and AT LISA tri were of similar quality, but the near focus of the ZKB00 outperformed the near foci of the rest of the IOLs. The IOLs’ optical performance gradually deteriorates as pupil increases. CONCLUSIONS. Differences in the design of the diffractive IOLs translate into differences in optical quality at their foci, through-focus performance, and halo features, which can offer further information to surgeons when selecting which IOL to implant.
dc.format.extent9 p.
dc.subjectÀrees temàtiques de la UPC::Ciències de la visió::Instruments òptics i optomètrics::Lents oftàlmiques
dc.subjectÀrees temàtiques de la UPC::Ciències de la salut::Medicina::Oftalmologia
dc.subject.lcshIntraocular lenses
dc.subject.lcshEye--Accommodation and refraction
dc.subject.othercataract surgery
dc.subject.otherdiffractive bifocal intraocular lens
dc.subject.otherdiffractive trifocal intraocular lens
dc.subject.otherthrough-focus performance
dc.titleHalo and Through-Focus Performance of Four Diffractive Multifocal Intraocular Lenses
dc.subject.lemacCataractes -- Cirurgia
dc.subject.lemacLents intraoculars
dc.subject.lemacUlls -- Acomodació i refracció
dc.contributor.groupUniversitat Politècnica de Catalunya. GOAPI - Grup d'Òptica Aplicada i Processament d'Imatge
dc.contributor.groupUniversitat Politècnica de Catalunya. GRCUV - Grup de Recerca del Centre Universitari de la Visió
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorVega, F.; Alba, F.; Millan, M.; Varon, M.; Gil, M.; Buil, J.
local.citation.publicationNameInvestigative ophthalmology and visual science

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