PMID: 9530594Apr 8, 1998Paper

Accuracy of ultrasonic pachymetry and videokeratography in detecting keratoconus

Journal of Cataract and Refractive Surgery
Y S RabinowitzJ Elashoff

Abstract

To compare the accuracy of ultrasonic pachymetry measurements and videokeratography-derived indices in distinguishing keratoconus patients from those with normal eyes. A subspecialty cornea practice (Los Angeles, California, USA) and the Keratoconus Genetics Research Project. Corneal thickness was measured by ultrasonic pachymetry at the center and inferior margins of the pupil of 142 normal and 99 keratoconus patients The corneal surface topography of patients was studied with the Topographic Modeling System (TMS-1). The videokeratographs obtained were analyzed with a computer program that automatically calculates two indices derived from data points in the central and paracentral cornea: central K and I-S values. Linear discriminant analysis was used to determine the correct classification percentages using pachymetry measurements and indices derived from videokeratography as the independent variables. The range of corneal thickness in normal and keratoconic eyes overlapped considerably. In the discriminant analysis, videokeratography indices provided a 97.5% correct classification rate and pachymetry data, an 86.0% rate (P < .01, McNemar's test). Keratoconus is more accurately distinguished from the normal population by vide...Continue Reading

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Citations

Aug 16, 2011·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·José F AlfonsoRobert Montés-Micó
Jun 1, 2000·Journal of Cataract and Refractive Surgery·P J ChastangL Laroche
Jul 19, 2005·Genetics in Medicine : Official Journal of the American College of Medical Genetics·Yongming G TangHuiying Yang
Oct 28, 2006·Cornea·Timothy T McMahonUNKNOWN CLEK Study Group
Dec 17, 2005·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Han-Bor FamDan Z Reinstein
Sep 15, 2006·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Ashraf M MahmoudUNKNOWN Clek Study Group
Feb 9, 2012·Cornea·Yee Onn KokSeng Chee Loon
May 18, 2013·Current Opinion in Ophthalmology·Renato AmbrósioAllan Luz
Oct 4, 2008·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Barbara FinkJoseph T Barr
Aug 8, 2001·Journal of Cataract and Refractive Surgery·G LafondC Lajoie
Feb 23, 2000·Journal of Cataract and Refractive Surgery·G U AuffarthH E Völcker
Sep 5, 2003·Journal of Cataract and Refractive Surgery·Antonio Leccisotti, Stefania V Fields
May 26, 2012·Journal of Cataract and Refractive Surgery·Mathew KurianBhujang K Shetty
Jan 19, 2016·Zeitschrift für medizinische Physik·Bernardo T LopesRenato Ambrósio
Mar 23, 2011·Journal of Cataract and Refractive Surgery·José F AlfonsoRobert Montés-Micó
May 25, 2010·Journal of Cataract and Refractive Surgery·José F AlfonsoRobert Montés-Micó
Dec 26, 2015·Journal of Cataract and Refractive Surgery·Antonio MoramarcoLuigi Fontana
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Sep 19, 2008·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Lale K BilginTuran Sezen
Mar 26, 2008·Journal of Cataract and Refractive Surgery·Mohammad-Reza NilforoushanRobert Latkany
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Apr 9, 2015·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·M NilssonR L Brautaset
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Jun 7, 2017·Journal of Refractive Surgery·Riccardo VinciguerraPaolo Vinciguerra
Jun 5, 2004·Journal of Cataract and Refractive Surgery·D GherghelS Shah

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