[Quantification of capsular sack forces after intraocular lens implantation].
Identifieur interne : 002247 ( PubMed/Corpus ); précédent : 002246; suivant : 002248[Quantification of capsular sack forces after intraocular lens implantation].
Auteurs : R. Effert ; T. Heim ; M. DanassisSource :
- Fortschritte der Ophthalmologie : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft [ 0723-8045 ] ; 1990.
English descriptors
- KwdEn :
- MESH :
- physiopathology : Lens Capsule, Crystalline.
- surgery : Lens Capsule, Crystalline.
- Animals, Biomechanical Phenomena, Lenses, Intraocular, Optics and Photonics, Prosthesis Design, Swine.
Abstract
In order to quantify the force acting in the capsular bag following implantation of an intraocular lens (IOL), 58 J- and C-loop lenses obtained from four different manufactures were implanted into the capsular bag in porcine eyes. The cornea and iris were removed before implantation. Photographs of the capsular bag before and after implantation, with a measuring rod for comparison, were taken under a microscope. In this way, the compression of the haptics could be measured (mean 1.7 mm, standard deviation 0.6 mm). Afterwards one haptic of each lens was fixed in a special mount placed on a high precision scale and the opposite haptic was compressed by 2 mm using a special micrometer-screw. After 5 min compression time, differences of 300% between the different manufacturers and lens types were measured. To find out whether the differences measured have an influence on the deformation of the capsular bag, a graph was plotted with force measured and values for elongation of the capsular bag along the axes. In this way a correlation of the elongation and the force could be shown. The results show that besides shaping the haptics of IOLs, the force necessary to compress the haptics also has an influence on the final form of the capsular bag.
PubMed: 2086398
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pubmed:2086398Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">[Quantification of capsular sack forces after intraocular lens implantation].</title><author><name sortKey="Effert, R" sort="Effert, R" uniqKey="Effert R" first="R" last="Effert">R. Effert</name><affiliation><nlm:affiliation>Augenklinik, Medizinischen Fakultät der RWTH, Aachen, Bundesrepublik Deutschland.</nlm:affiliation></affiliation></author><author><name sortKey="Heim, T" sort="Heim, T" uniqKey="Heim T" first="T" last="Heim">T. Heim</name></author><author><name sortKey="Danassis, M" sort="Danassis, M" uniqKey="Danassis M" first="M" last="Danassis">M. Danassis</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1990">1990</date><idno type="RBID">pubmed:2086398</idno><idno type="pmid">2086398</idno><idno type="wicri:Area/PubMed/Corpus">002247</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">[Quantification of capsular sack forces after intraocular lens implantation].</title><author><name sortKey="Effert, R" sort="Effert, R" uniqKey="Effert R" first="R" last="Effert">R. Effert</name><affiliation><nlm:affiliation>Augenklinik, Medizinischen Fakultät der RWTH, Aachen, Bundesrepublik Deutschland.</nlm:affiliation></affiliation></author><author><name sortKey="Heim, T" sort="Heim, T" uniqKey="Heim T" first="T" last="Heim">T. Heim</name></author><author><name sortKey="Danassis, M" sort="Danassis, M" uniqKey="Danassis M" first="M" last="Danassis">M. Danassis</name></author></analytic><series><title level="j">Fortschritte der Ophthalmologie : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft</title><idno type="ISSN">0723-8045</idno><imprint><date when="1990" type="published">1990</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Biomechanical Phenomena</term><term>Lens Capsule, Crystalline (physiopathology)</term><term>Lens Capsule, Crystalline (surgery)</term><term>Lenses, Intraocular</term><term>Optics and Photonics</term><term>Prosthesis Design</term><term>Swine</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Lens Capsule, Crystalline</term></keywords><keywords scheme="MESH" qualifier="surgery" xml:lang="en"><term>Lens Capsule, Crystalline</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Biomechanical Phenomena</term><term>Lenses, Intraocular</term><term>Optics and Photonics</term><term>Prosthesis Design</term><term>Swine</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In order to quantify the force acting in the capsular bag following implantation of an intraocular lens (IOL), 58 J- and C-loop lenses obtained from four different manufactures were implanted into the capsular bag in porcine eyes. The cornea and iris were removed before implantation. Photographs of the capsular bag before and after implantation, with a measuring rod for comparison, were taken under a microscope. In this way, the compression of the haptics could be measured (mean 1.7 mm, standard deviation 0.6 mm). Afterwards one haptic of each lens was fixed in a special mount placed on a high precision scale and the opposite haptic was compressed by 2 mm using a special micrometer-screw. After 5 min compression time, differences of 300% between the different manufacturers and lens types were measured. To find out whether the differences measured have an influence on the deformation of the capsular bag, a graph was plotted with force measured and values for elongation of the capsular bag along the axes. In this way a correlation of the elongation and the force could be shown. The results show that besides shaping the haptics of IOLs, the force necessary to compress the haptics also has an influence on the final form of the capsular bag.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">2086398</PMID><DateCreated><Year>1991</Year><Month>05</Month><Day>20</Day></DateCreated><DateCompleted><Year>1991</Year><Month>05</Month><Day>20</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0723-8045</ISSN><JournalIssue CitedMedium="Print"><Volume>87</Volume><Issue>6</Issue><PubDate><Year>1990</Year></PubDate></JournalIssue><Title>Fortschritte der Ophthalmologie : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft</Title><ISOAbbreviation>Fortschr Ophthalmol</ISOAbbreviation></Journal><ArticleTitle>[Quantification of capsular sack forces after intraocular lens implantation].</ArticleTitle><Pagination><MedlinePgn>579-82</MedlinePgn></Pagination><Abstract><AbstractText>In order to quantify the force acting in the capsular bag following implantation of an intraocular lens (IOL), 58 J- and C-loop lenses obtained from four different manufactures were implanted into the capsular bag in porcine eyes. The cornea and iris were removed before implantation. Photographs of the capsular bag before and after implantation, with a measuring rod for comparison, were taken under a microscope. In this way, the compression of the haptics could be measured (mean 1.7 mm, standard deviation 0.6 mm). Afterwards one haptic of each lens was fixed in a special mount placed on a high precision scale and the opposite haptic was compressed by 2 mm using a special micrometer-screw. After 5 min compression time, differences of 300% between the different manufacturers and lens types were measured. To find out whether the differences measured have an influence on the deformation of the capsular bag, a graph was plotted with force measured and values for elongation of the capsular bag along the axes. In this way a correlation of the elongation and the force could be shown. The results show that besides shaping the haptics of IOLs, the force necessary to compress the haptics also has an influence on the final form of the capsular bag.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Effert</LastName><ForeName>R</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Augenklinik, Medizinischen Fakultät der RWTH, Aachen, Bundesrepublik Deutschland.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Heim</LastName><ForeName>T</ForeName><Initials>T</Initials></Author><Author ValidYN="Y"><LastName>Danassis</LastName><ForeName>M</ForeName><Initials>M</Initials></Author></AuthorList><Language>ger</Language><PublicationTypeList><PublicationType UI="D004740">English Abstract</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><VernacularTitle>Quantifizierung der im Kapselsack wirkenden Kräfte nach Implantation von intraokularen Linsen.</VernacularTitle></Article><MedlineJournalInfo><Country>GERMANY</Country><MedlineTA>Fortschr Ophthalmol</MedlineTA><NlmUniqueID>8302807</NlmUniqueID><ISSNLinking>0723-8045</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000818">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D001696">Biomechanical Phenomena</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D007903">Lens Capsule, Crystalline</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000503">physiopathology</QualifierName><QualifierName MajorTopicYN="Y" UI="Q000601">surgery</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D007910">Lenses, Intraocular</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D055095">Optics and Photonics</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011474">Prosthesis Design</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D013552">Swine</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1990</Year><Month>1</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1990</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1990</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">2086398</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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