Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power.
Identifieur interne : 001B33 ( PubMed/Curation ); précédent : 001B32; suivant : 001B34Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power.
Auteurs : Sverker Norrby [Pays-Bas]Source :
- Journal of cataract and refractive surgery [ 0886-3350 ] ; 2004.
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Abstract
To develop a methodology for intraocular lens (IOL) power calculation in which the task of predicting the postoperative position of the IOL is separated from the calculation itself.
DOI: 10.1016/j.jcrs.2003.09.055
PubMed: 15130635
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power.</title><author><name sortKey="Norrby, Sverker" sort="Norrby, Sverker" uniqKey="Norrby S" first="Sverker" last="Norrby">Sverker Norrby</name><affiliation wicri:level="1"><nlm:affiliation>Pharmacia, Groningen, The Netherlands. sverker.norrby@pharmacia.com</nlm:affiliation><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Pharmacia, Groningen</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2004">2004</date><idno type="RBID">pubmed:15130635</idno><idno type="pmid">15130635</idno><idno type="doi">10.1016/j.jcrs.2003.09.055</idno><idno type="wicri:Area/PubMed/Corpus">001B33</idno><idno type="wicri:Area/PubMed/Curation">001B33</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power.</title><author><name sortKey="Norrby, Sverker" sort="Norrby, Sverker" uniqKey="Norrby S" first="Sverker" last="Norrby">Sverker Norrby</name><affiliation wicri:level="1"><nlm:affiliation>Pharmacia, Groningen, The Netherlands. sverker.norrby@pharmacia.com</nlm:affiliation><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Pharmacia, Groningen</wicri:regionArea></affiliation></author></analytic><series><title level="j">Journal of cataract and refractive surgery</title><idno type="ISSN">0886-3350</idno><imprint><date when="2004" type="published">2004</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Algorithms</term><term>Humans</term><term>Lenses, Intraocular</term><term>Models, Biological</term><term>Optics and Photonics</term><term>Refraction, Ocular</term><term>Visual Acuity</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Algorithms</term><term>Humans</term><term>Lenses, Intraocular</term><term>Models, Biological</term><term>Optics and Photonics</term><term>Refraction, Ocular</term><term>Visual Acuity</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To develop a methodology for intraocular lens (IOL) power calculation in which the task of predicting the postoperative position of the IOL is separated from the calculation itself.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">15130635</PMID><DateCreated><Year>2004</Year><Month>05</Month><Day>07</Day></DateCreated><DateCompleted><Year>2004</Year><Month>06</Month><Day>21</Day></DateCompleted><DateRevised><Year>2008</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0886-3350</ISSN><JournalIssue CitedMedium="Print"><Volume>30</Volume><Issue>5</Issue><PubDate><Year>2004</Year><Month>May</Month></PubDate></JournalIssue><Title>Journal of cataract and refractive surgery</Title><ISOAbbreviation>J Cataract Refract Surg</ISOAbbreviation></Journal><ArticleTitle>Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power.</ArticleTitle><Pagination><MedlinePgn>1000-5</MedlinePgn></Pagination><Abstract><AbstractText Label="PURPOSE" NlmCategory="OBJECTIVE">To develop a methodology for intraocular lens (IOL) power calculation in which the task of predicting the postoperative position of the IOL is separated from the calculation itself.</AbstractText><AbstractText Label="SETTING" NlmCategory="METHODS">Pharmacia, Groningen, The Netherlands.</AbstractText><AbstractText Label="METHODS" NlmCategory="METHODS">The minimum biometry input needed for IOL power calculation is the mean anterior corneal radius and axial length of the eye. The lens haptic plane (LHP) is the plane where the IOL haptics make contact with eye tissue. It is an anatomical site (eg, the equator of the capsular bag) and is independent of the IOL model. The position of the IOL optic in relation to the LHP is determined from the exact design of the IOL. Gullstrand's eye model is adopted to obtain the posterior corneal radius, thickness of the cornea, and refractive indices of the eye media. Thick-lens ray tracing in the paraxial limit is used for the optical calculation.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">A spreadsheet is given for the calculation.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">The methodology developed allows for IOL power calculation from first principles (ie, using true physical distances, radii, and refractive indices as input for the optical calculation).</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Norrby</LastName><ForeName>Sverker</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Pharmacia, Groningen, The Netherlands. sverker.norrby@pharmacia.com</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Cataract Refract Surg</MedlineTA><NlmUniqueID>8604171</NlmUniqueID><ISSNLinking>0886-3350</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000465">Algorithms</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D007910">Lenses, Intraocular</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008954">Models, Biological</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D055095">Optics and Photonics</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D012029">Refraction, Ocular</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D014792">Visual Acuity</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2004</Year><Month>5</Month><Day>8</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2004</Year><Month>6</Month><Day>24</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2003</Year><Month>Sep</Month><Day>22</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2004</Year><Month>5</Month><Day>8</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">15130635</ArticleId><ArticleId IdType="doi">10.1016/j.jcrs.2003.09.055</ArticleId><ArticleId IdType="pii">S0886335003009374</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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