NDLI: Halo and Through-Focus Performance of Four Diffractive Multifocal Intraocular Lenses.

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Halo and Through-Focus Performance of Four Diffractive Multifocal Intraocular Lenses.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Buil, Jose A. Vega, Fidel Alba-Bueno, Francisco Millán, María S. Varón, Consuelo Gil, Miguel A.
Description	Country affiliation: Spain Author Affiliation: Vega F ( Department d'Òptica i Optometria Universitat Politècnica de Catalunya, BarcelonaTECH, Terrassa, Spain.); Alba-Bueno F ( Department d'Òptica i Optometria Universitat Politècnica de Catalunya, BarcelonaTECH, Terrassa, Spain.); Millán MS ( Department d'Òptica i Optometria Universitat Politècnica de Catalunya, BarcelonaTECH, Terrassa, Spain.); Varón C ( Department d'Òptica i Optometria Universitat Politècnica de Catalunya, BarcelonaTECH, Terrassa, Spain.); Gil MA ( Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.); Buil JA ( Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.)
Abstract	PURPOSE: 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 +2.5 D SV25T0, Tecnis +2.75 D ZKB00, and AT LISA +3.75 D 809M) and a diffractive trifocal IOL (AT LISA tri +3.33 D, +1.66 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.
ISSN	01460404
e-ISSN	15525783
Journal	Investigative Opthalmology & Visual Science
Issue Number	6
Volume Number	56
Language	English
Publisher	Association for Research in Vision and Ophthalmology
Publisher Date	2015-06-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Lenses, Intraocular Optical Phenomena Models, Biological Prosthesis Design Pupil Physiology Vision Disorders Rehabilitation Research Support, Non-u.s. Gov't Discipline Ophthalmology
Content Type	Text
Resource Type	Article
Subject	Ophthalmology Sensory Systems Cellular and Molecular Neuroscience

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