Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
Identifieur interne : 001233 ( Main/Merge ); précédent : 001232; suivant : 001234Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye
Auteurs : Takashi Fujikado [Japon] ; Makoto Saika [Japon]Source :
- Clinical Ophthalmology (Auckland, N.Z.) [ 1177-5467 ] ; 2014.
Abstract
To examine the effect of misalignment (decentration and tilt) of intraocular lenses (IOLs) on retinal image quality using a water-immersed model eye with corneal spherical aberration adjusted to the values found in normal human eyes (spherical aberration 0.25 μm; pupil diameter 6 mm).
Three types of IOL holders were prepared. The first was without decentration or tilt, the second had a decentration of 0.5 mm, and the third had a tilt of 5.0°. One spherical IOL and three aspherical IOLs, each with a power of +20 D, were set in the holders and their optical properties (wave front aberration, defocused modulation transfer function, defocused point spread function, and Landolt ring simulations) were compared.
Coma aberrations generated by misaligned IOLs were related to the spherical aberration corrective power of the IOLs. Landolt ring simulations show that the depth of focus increased as spherical aberration increased and that the retinal image quality was degraded by increases in coma aberration.
Coma aberration was generated by IOLs with a large degree of spherical aberration correction, leading to reduced retinal image quality when the IOL was misaligned. This suggests that, in a clinical setting, the quality of vision might be improved by reducing the degree of coma aberration using IOLs that retain, or minimally correct, spherical aberration.
Url:
DOI: 10.2147/OPTH.S72053
PubMed: 25506203
PubMed Central: 4259511
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye</title><author><name sortKey="Fujikado, Takashi" sort="Fujikado, Takashi" uniqKey="Fujikado T" first="Takashi" last="Fujikado">Takashi Fujikado</name><affiliation wicri:level="1"><nlm:aff id="af1-opth-8-2415">Department of Applied Visual Science, Osaka University Graduate School of Medicine, Osaka, Japan</nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Applied Visual Science, Osaka University Graduate School of Medicine, Osaka</wicri:regionArea><wicri:noRegion>Osaka</wicri:noRegion></affiliation></author><author><name sortKey="Saika, Makoto" sort="Saika, Makoto" uniqKey="Saika M" first="Makoto" last="Saika">Makoto Saika</name><affiliation wicri:level="3"><nlm:aff id="af2-opth-8-2415">Research and Development Department of Topcon Corporation, Tokyo, Japan</nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Research and Development Department of Topcon Corporation, Tokyo</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25506203</idno><idno type="pmc">4259511</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4259511</idno><idno type="RBID">PMC:4259511</idno><idno type="doi">10.2147/OPTH.S72053</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">001C46</idno><idno type="wicri:Area/Pmc/Curation">001C46</idno><idno type="wicri:Area/Pmc/Checkpoint">000C49</idno><idno type="wicri:Area/Ncbi/Merge">003538</idno><idno type="wicri:Area/Ncbi/Curation">003538</idno><idno type="wicri:Area/Ncbi/Checkpoint">003538</idno><idno type="wicri:doubleKey">1177-5467:2014:Fujikado T:evaluation:of:actual</idno><idno type="wicri:Area/Main/Merge">001233</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Evaluation of actual retinal images produced by misaligned aspheric intraocular lenses in a model eye</title><author><name sortKey="Fujikado, Takashi" sort="Fujikado, Takashi" uniqKey="Fujikado T" first="Takashi" last="Fujikado">Takashi Fujikado</name><affiliation wicri:level="1"><nlm:aff id="af1-opth-8-2415">Department of Applied Visual Science, Osaka University Graduate School of Medicine, Osaka, Japan</nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Applied Visual Science, Osaka University Graduate School of Medicine, Osaka</wicri:regionArea><wicri:noRegion>Osaka</wicri:noRegion></affiliation></author><author><name sortKey="Saika, Makoto" sort="Saika, Makoto" uniqKey="Saika M" first="Makoto" last="Saika">Makoto Saika</name><affiliation wicri:level="3"><nlm:aff id="af2-opth-8-2415">Research and Development Department of Topcon Corporation, Tokyo, Japan</nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Research and Development Department of Topcon Corporation, Tokyo</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement></placeName></affiliation></author></analytic><series><title level="j">Clinical Ophthalmology (Auckland, N.Z.)</title><idno type="ISSN">1177-5467</idno><idno type="eISSN">1177-5483</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Purpose</title><p>To examine the effect of misalignment (decentration and tilt) of intraocular lenses (IOLs) on retinal image quality using a water-immersed model eye with corneal spherical aberration adjusted to the values found in normal human eyes (spherical aberration 0.25 μm; pupil diameter 6 mm).</p></sec><sec><title>Methods</title><p>Three types of IOL holders were prepared. The first was without decentration or tilt, the second had a decentration of 0.5 mm, and the third had a tilt of 5.0°. One spherical IOL and three aspherical IOLs, each with a power of +20 D, were set in the holders and their optical properties (wave front aberration, defocused modulation transfer function, defocused point spread function, and Landolt ring simulations) were compared.</p></sec><sec><title>Results</title><p>Coma aberrations generated by misaligned IOLs were related to the spherical aberration corrective power of the IOLs. Landolt ring simulations show that the depth of focus increased as spherical aberration increased and that the retinal image quality was degraded by increases in coma aberration.</p></sec><sec><title>Conclusion</title><p>Coma aberration was generated by IOLs with a large degree of spherical aberration correction, leading to reduced retinal image quality when the IOL was misaligned. This suggests that, in a clinical setting, the quality of vision might be improved by reducing the degree of coma aberration using IOLs that retain, or minimally correct, spherical aberration.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Millodot, M" uniqKey="Millodot M">M Millodot</name></author><author><name sortKey="Sivak, J" uniqKey="Sivak J">J Sivak</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Artal, P" uniqKey="Artal P">P Artal</name></author><author><name sortKey="Guirao, A" uniqKey="Guirao A">A Guirao</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Howland, Hc" uniqKey="Howland H">HC Howland</name></author><author><name sortKey="Howland, B" uniqKey="Howland B">B Howland</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Denoyer, A" uniqKey="Denoyer A">A Denoyer</name></author><author><name sortKey="Le Lez, 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