Variability of Subjective Classifications of Corneal Topography Maps From LASIK Candidates

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dc.contributor.authorRamos, Isaac C.
dc.contributor.authorCorrea, Rosane
dc.contributor.authorGuerra, Frederico P.
dc.contributor.authorTrattler, William
dc.contributor.authorBelin, Michael W.
dc.contributor.authorKlyce, Stephen D.
dc.contributor.authorFontes, Bruno M.
dc.contributor.authorSchor, Paulo [UNIFESP]
dc.contributor.authorSmolek, Michael K.
dc.contributor.authorDawson, Daniel G.
dc.contributor.authorChalita, Maria Regina
dc.contributor.authorCazal, Jorge O.
dc.contributor.authorRuiz, Milton
dc.contributor.authorRandleman, J. Bradley
dc.contributor.authorAmbrosio, Renato [UNIFESP]
dc.contributor.institutionRio de Janeiro Corneal Tomog & Biomech Study Grp
dc.contributor.institutionInst Olhos Renato Ambrosio
dc.contributor.institutionHosp Olhos Santa Luzia
dc.contributor.institutionCtr Excellence Eye Care
dc.contributor.institutionUniv Arizona
dc.contributor.institutionMt Sinai Sch Med
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionCLEVER Eye Inst
dc.contributor.institutionUniv Florida
dc.contributor.institutionUniversidade de Brasília (UnB)
dc.contributor.institutionUniv Autonoma Barcelona
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionEmory Univ
dc.date.accessioned2016-01-24T14:34:42Z
dc.date.available2016-01-24T14:34:42Z
dc.date.issued2013-11-01
dc.description.abstractPURPOSE: To evaluate the variability of subjective corneal topography map classification between different experienced examiners and the impact of changing from an absolute to a normative scale on the classifications.METHODS: Preoperative axial curvature maps using Scheimpflug imaging obtained with the Pentacam HR (Oculus Optikgerate, Wetzlar, Germany) and clinical parameters were sent to 11 corneal topography specialists for subjective classification according to the Ectasia Risk Scoring System. the study population included two groups: 11 eyes that developed ectasia after LASIK and 14 eyes that had successful and stable LASIK outcomes. Each case was first reviewed using the absolute scale masked to the patient group. After 3 months, the same cases were represented using a normative scale and reviewed again by the same examiners for new classifications masked to the patient group.RESULTS: Using the absolute scale, 17 of 25 (68%) cases had variations on the classifications from 0 to 4 for the same eye across examiners, and the overall agreement with the mode was 60%. Using the normative scale, the classifications from 11 of 25 (44%) cases varied from 0 to 4 for the same eye across examiners, and the overall agreement with the mode was 61%. Eight examiners (73%) reported statistically higher scores (P < .05) when using the normative scale. Considering all 550 topographic analyses (25 cases, 11 examiners, and two scales), the same classification from the two scales was reported for 121 case pairs (44%).CONCLUSION: There was significant inter-observer variability in the subjective classifications using the same scale, and significant intra-observer variability between scales. Changing from an absolute to a normative scale increased the scores on the classifications by the same examiner, but significant inter-observer variability in the subjective interpretation of the maps still persisted.en
dc.description.affiliationRio de Janeiro Corneal Tomog & Biomech Study Grp, Rio de Janeiro, Brazil
dc.description.affiliationInst Olhos Renato Ambrosio, Rio de Janeiro, Brazil
dc.description.affiliationHosp Olhos Santa Luzia, Maceio, Brazil
dc.description.affiliationCtr Excellence Eye Care, Miami, FL USA
dc.description.affiliationUniv Arizona, Southern Arizona VA Healthcare Syst, Tucson, AZ USA
dc.description.affiliationMt Sinai Sch Med, Dept Ophthalmol, New York, NY USA
dc.description.affiliationUniversidade Federal de São Paulo, Dept Ophthalmol, São Paulo, Brazil
dc.description.affiliationCLEVER Eye Inst, Pearl River, LA USA
dc.description.affiliationUniv Florida, Dept Ophthalmol, Gainesville, FL USA
dc.description.affiliationUniv Brasilia, Dept Ophthalmol, Brasilia, DF, Brazil
dc.description.affiliationUniv Autonoma Barcelona, E-08193 Barcelona, Spain
dc.description.affiliationUniv São Paulo, Dept Ophthalmol, São Paulo, Brazil
dc.description.affiliationEmory Univ, Dept Ophthalmol, Atlanta, GA 30322 USA
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Ophthalmol, São Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent770-+
dc.identifierhttp://dx.doi.org/10.3928/1081597X-20130823-01
dc.identifier.citationJournal of Refractive Surgery. Thorofare: Slack Inc, v. 29, n. 11, p. 770-+, 2013.
dc.identifier.doi10.3928/1081597X-20130823-01
dc.identifier.issn1081-597X
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/36968
dc.identifier.wosWOS:000329186600007
dc.language.isoeng
dc.publisherSlack Inc
dc.relation.ispartofJournal of Refractive Surgery
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.titleVariability of Subjective Classifications of Corneal Topography Maps From LASIK Candidatesen
dc.typeinfo:eu-repo/semantics/article
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