Accommodative intraocular lenses: current status.
Identifieur interne : 001997 ( PubMed/Corpus ); précédent : 001996; suivant : 001998Accommodative intraocular lenses: current status.
Auteurs : H Burkhard DickSource :
- Current opinion in ophthalmology [ 1040-8738 ] ; 2005.
English descriptors
- KwdEn :
- MESH :
- physiopathology : Presbyopia.
- Accommodation, Ocular, Cataract Extraction, Humans, Lens Implantation, Intraocular, Lenses, Intraocular, Prosthesis Design.
Abstract
The possibility of using a monofocal IOL with accommodative ability allows refractive cataract surgery with a clearly decreased potential of photic phenomena. Three IOLs of different designs and materials have demonstrated accommodative ability, but the degree of accommodative amplitude has been reported to different extents and variabilities. The plate-haptic CrystaLens has a hinged design that might permit forward movement of the optic as a result of pressure changes in the vitreous cavity. The 1CU has modified haptics that bend in the bag as the lens capsule contracts, which are supposed to cause anterior displacement of the lens optic. With the dual-optic one-piece Synchrony, springlike haptics separate a high-plus anterior lens from a posterior minus lens. With accommodative effort, the capsular bag expands and the springs express kinetic energy, which might allow the optics to separate as the anterior lens moves forward.
PubMed: 15650575
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Accommodative intraocular lenses: current status.</title><author><name sortKey="Dick, H Burkhard" sort="Dick, H Burkhard" uniqKey="Dick H" first="H Burkhard" last="Dick">H Burkhard Dick</name><affiliation><nlm:affiliation>Johannes Gutenberg-University, Mainz, Germany. bdick@mail.uni-mainz.de</nlm:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2005">2005</date><idno type="RBID">pubmed:15650575</idno><idno type="pmid">15650575</idno><idno type="wicri:Area/PubMed/Corpus">001997</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Accommodative intraocular lenses: current status.</title><author><name sortKey="Dick, H Burkhard" sort="Dick, H Burkhard" uniqKey="Dick H" first="H Burkhard" last="Dick">H Burkhard Dick</name><affiliation><nlm:affiliation>Johannes Gutenberg-University, Mainz, Germany. bdick@mail.uni-mainz.de</nlm:affiliation></affiliation></author></analytic><series><title level="j">Current opinion in ophthalmology</title><idno type="ISSN">1040-8738</idno><imprint><date when="2005" type="published">2005</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Accommodation, Ocular</term><term>Cataract Extraction</term><term>Humans</term><term>Lens Implantation, Intraocular</term><term>Lenses, Intraocular</term><term>Presbyopia (physiopathology)</term><term>Prosthesis Design</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Presbyopia</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Accommodation, Ocular</term><term>Cataract Extraction</term><term>Humans</term><term>Lens Implantation, Intraocular</term><term>Lenses, Intraocular</term><term>Prosthesis Design</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The possibility of using a monofocal IOL with accommodative ability allows refractive cataract surgery with a clearly decreased potential of photic phenomena. Three IOLs of different designs and materials have demonstrated accommodative ability, but the degree of accommodative amplitude has been reported to different extents and variabilities. The plate-haptic CrystaLens has a hinged design that might permit forward movement of the optic as a result of pressure changes in the vitreous cavity. The 1CU has modified haptics that bend in the bag as the lens capsule contracts, which are supposed to cause anterior displacement of the lens optic. With the dual-optic one-piece Synchrony, springlike haptics separate a high-plus anterior lens from a posterior minus lens. With accommodative effort, the capsular bag expands and the springs express kinetic energy, which might allow the optics to separate as the anterior lens moves forward.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">15650575</PMID><DateCreated><Year>2005</Year><Month>01</Month><Day>14</Day></DateCreated><DateCompleted><Year>2005</Year><Month>04</Month><Day>08</Day></DateCompleted><DateRevised><Year>2005</Year><Month>11</Month><Day>16</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1040-8738</ISSN><JournalIssue CitedMedium="Print"><Volume>16</Volume><Issue>1</Issue><PubDate><Year>2005</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Current opinion in ophthalmology</Title><ISOAbbreviation>Curr Opin Ophthalmol</ISOAbbreviation></Journal><ArticleTitle>Accommodative intraocular lenses: current status.</ArticleTitle><Pagination><MedlinePgn>8-26</MedlinePgn></Pagination><Abstract><AbstractText Label="PURPOSE OF REVIEW" NlmCategory="OBJECTIVE">The possibility of using a monofocal IOL with accommodative ability allows refractive cataract surgery with a clearly decreased potential of photic phenomena. Three IOLs of different designs and materials have demonstrated accommodative ability, but the degree of accommodative amplitude has been reported to different extents and variabilities. The plate-haptic CrystaLens has a hinged design that might permit forward movement of the optic as a result of pressure changes in the vitreous cavity. The 1CU has modified haptics that bend in the bag as the lens capsule contracts, which are supposed to cause anterior displacement of the lens optic. With the dual-optic one-piece Synchrony, springlike haptics separate a high-plus anterior lens from a posterior minus lens. With accommodative effort, the capsular bag expands and the springs express kinetic energy, which might allow the optics to separate as the anterior lens moves forward.</AbstractText><AbstractText Label="RECENT FINDINGS" NlmCategory="RESULTS">This article seeks to clarify and distinguish the concepts of true accommodation and pseudo accommodation. Current designs of accommodative IOLs are supposed to work by the focus-shift principle to allow true pseudophakic accommodation. Studies that biometrically assessed optic shift found no or only low amplitudes of forward movement. The amount of forward movement, if present, was highly variable between patients. To date, most studies present psychophysical data for the proof of concept, which alone seems insufficient. Capsule bag performance and posterior capsule opacification with accommodative IOLs seem worse than those with standard intraocular lenses.</AbstractText><AbstractText Label="SUMMARY" NlmCategory="CONCLUSIONS">The potential clinical benefits of accommodative IOL technology for both cataract patients and refractive patients may place accommodative IOLs in a competitive position with multifocal IOL technology.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Dick</LastName><ForeName>H Burkhard</ForeName><Initials>HB</Initials><AffiliationInfo><Affiliation>Johannes Gutenberg-University, Mainz, Germany. bdick@mail.uni-mainz.de</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D016454">Review</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Curr Opin Ophthalmol</MedlineTA><NlmUniqueID>9011108</NlmUniqueID><ISSNLinking>1040-8738</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D000065">Accommodation, Ocular</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D002387">Cataract Extraction</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D019654">Lens Implantation, Intraocular</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D007910">Lenses, Intraocular</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011305">Presbyopia</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000503">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011474">Prosthesis Design</DescriptorName></MeshHeading></MeshHeadingList><NumberOfReferences>83</NumberOfReferences></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2005</Year><Month>1</Month><Day>15</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2005</Year><Month>4</Month><Day>9</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2005</Year><Month>1</Month><Day>15</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">00055735-200502000-00004</ArticleId><ArticleId IdType="pubmed">15650575</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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