Comparison of 2 A-scans.
Identifieur interne : 001C32 ( PubMed/Curation ); précédent : 001C31; suivant : 001C33Comparison of 2 A-scans.
Auteurs : Sverker Norrby [Pays-Bas] ; Eva Lydahl ; Gabor Koranyi ; Mikaela TaubeSource :
- Journal of cataract and refractive surgery [ 0886-3350 ] ; 2003.
English descriptors
- KwdEn :
- MESH :
- instrumentation : Ultrasonography.
- ultrasonography : Anterior Chamber, Cataract, Eye, Lens, Crystalline.
- Cataract Extraction, Humans, Lenses, Intraocular, Postoperative Period, Predictive Value of Tests.
Abstract
To compare 2 A-scan instruments with regard to differences in measured results for the same patient sample.
PubMed: 12551674
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Comparison of 2 A-scans.</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.</nlm:affiliation><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Pharmacia, Groningen</wicri:regionArea></affiliation></author><author><name sortKey="Lydahl, Eva" sort="Lydahl, Eva" uniqKey="Lydahl E" first="Eva" last="Lydahl">Eva Lydahl</name></author><author><name sortKey="Koranyi, Gabor" sort="Koranyi, Gabor" uniqKey="Koranyi G" first="Gabor" last="Koranyi">Gabor Koranyi</name></author><author><name sortKey="Taube, Mikaela" sort="Taube, Mikaela" uniqKey="Taube M" first="Mikaela" last="Taube">Mikaela Taube</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2003">2003</date><idno type="RBID">pubmed:12551674</idno><idno type="pmid">12551674</idno><idno type="wicri:Area/PubMed/Corpus">001C32</idno><idno type="wicri:Area/PubMed/Curation">001C32</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Comparison of 2 A-scans.</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.</nlm:affiliation><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Pharmacia, Groningen</wicri:regionArea></affiliation></author><author><name sortKey="Lydahl, Eva" sort="Lydahl, Eva" uniqKey="Lydahl E" first="Eva" last="Lydahl">Eva Lydahl</name></author><author><name sortKey="Koranyi, Gabor" sort="Koranyi, Gabor" uniqKey="Koranyi G" first="Gabor" last="Koranyi">Gabor Koranyi</name></author><author><name sortKey="Taube, Mikaela" sort="Taube, Mikaela" uniqKey="Taube M" first="Mikaela" last="Taube">Mikaela Taube</name></author></analytic><series><title level="j">Journal of cataract and refractive surgery</title><idno type="ISSN">0886-3350</idno><imprint><date when="2003" type="published">2003</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anterior Chamber (ultrasonography)</term><term>Cataract (ultrasonography)</term><term>Cataract Extraction</term><term>Eye (ultrasonography)</term><term>Humans</term><term>Lens, Crystalline (ultrasonography)</term><term>Lenses, Intraocular</term><term>Postoperative Period</term><term>Predictive Value of Tests</term><term>Ultrasonography (instrumentation)</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Ultrasonography</term></keywords><keywords scheme="MESH" qualifier="ultrasonography" xml:lang="en"><term>Anterior Chamber</term><term>Cataract</term><term>Eye</term><term>Lens, Crystalline</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Cataract Extraction</term><term>Humans</term><term>Lenses, Intraocular</term><term>Postoperative Period</term><term>Predictive Value of Tests</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To compare 2 A-scan instruments with regard to differences in measured results for the same patient sample.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">12551674</PMID><DateCreated><Year>2003</Year><Month>01</Month><Day>28</Day></DateCreated><DateCompleted><Year>2004</Year><Month>09</Month><Day>07</Day></DateCompleted><DateRevised><Year>2006</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0886-3350</ISSN><JournalIssue CitedMedium="Print"><Volume>29</Volume><Issue>1</Issue><PubDate><Year>2003</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Journal of cataract and refractive surgery</Title><ISOAbbreviation>J Cataract Refract Surg</ISOAbbreviation></Journal><ArticleTitle>Comparison of 2 A-scans.</ArticleTitle><Pagination><MedlinePgn>95-9</MedlinePgn></Pagination><Abstract><AbstractText Label="PURPOSE" NlmCategory="OBJECTIVE">To compare 2 A-scan instruments with regard to differences in measured results for the same patient sample.</AbstractText><AbstractText Label="SETTING" NlmCategory="METHODS">St. Erik's Eye Hospital, Stockholm, Sweden.</AbstractText><AbstractText Label="METHODS" NlmCategory="METHODS">In a study to evaluate the lens-haptic plane concept of intraocular lens (IOL) power calculation, 148 patients eligible for cataract surgery were measured with 2 different A-scan instruments (BVI Axis and Sonomed 1500). The axial length (AL), anterior chamber depth (ACD), and lens thickness (LT) results were analyzed for systematic differences and random errors.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">The Sonomed 1500 measured systematically longer than the BVI Axis for AL (0.41 mm) and ACD (0.28 mm), although the correlation was good (r = 0.99 and r = 0.87, respectively). The LT correlated poorly (r = 0.18) and showed no systematic trend. The relative random errors (standard deviations) in ACD (7.2%) and LT (18.6%) were larger than that of the AL (0.8%). The systematic difference in the AL corresponds to a 1.0 diopter difference in the A-constant.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">The large random errors in the ACD and LT reduce their value as predictors of postoperative IOL position in formulas that use them. Systematic differences in AL can be large enough to require separate formula constants for different pieces of equipment. If this is the situation in 1 setting, there is a risk of mistakes. This confusion could be avoided if there were an agreed standard and a universal calibration procedure for instruments intended for AL measurement.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Norrby</LastName><ForeName>Sverker</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Pharmacia, Groningen, The Netherlands.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lydahl</LastName><ForeName>Eva</ForeName><Initials>E</Initials></Author><Author ValidYN="Y"><LastName>Koranyi</LastName><ForeName>Gabor</ForeName><Initials>G</Initials></Author><Author ValidYN="Y"><LastName>Taube</LastName><ForeName>Mikaela</ForeName><Initials>M</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><PublicationType UI="D023362">Evaluation Studies</PublicationType><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="D000867">Anterior Chamber</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000736">ultrasonography</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D002386">Cataract</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000736">ultrasonography</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D002387">Cataract Extraction</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005123">Eye</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000736">ultrasonography</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D007908">Lens, Crystalline</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000736">ultrasonography</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D007910">Lenses, Intraocular</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011184">Postoperative Period</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011237">Predictive Value of Tests</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D014463">Ultrasonography</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000295">instrumentation</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2003</Year><Month>1</Month><Day>29</Day><Hour>4</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2004</Year><Month>9</Month><Day>8</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2003</Year><Month>1</Month><Day>29</Day><Hour>4</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">12551674</ArticleId><ArticleId IdType="pii">S088633500201492X</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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