Journal of Cataract & Refractive Surgery
Volume 36, Issue 3 , Pages 425-430 , March 2010

Repeatability of corneal power and wavefront aberration measurements with a dual-Scheimpflug Placido corneal topographer

  • Li Wang, MD, PhD
  • ,
  • Mariko Shirayama, MD
  • ,
  • Douglas D. Koch, MD

      Affiliations

    • Corresponding Author InformationCorresponding author: Douglas D. Koch, MD, Department of Ophthalmology, Baylor College of Medicine, 6565 Fannin, NC205, Houston, Texas 77030, USA.

Received 9 July 2009 ,Revised 29 September 2009 ,Accepted 30 September 2009.

References 

  1. Barkana Y, Gerber Y, Elbaz U, Schwartz S, Ken-Dror G, Avni I, et al. Central corneal thickness measurement with the Pentacam Scheimpflug system, optical low-coherence reflectometry pachymeter, and ultrasound pachymetry. J Cataract Refract Surg. 2005;31:1729–1735
  2. Lackner B, Schmidinger G, Pieh S, Funovics MA, Skorpik C. Repeatability and reproducibility of central corneal thickness measurement with Pentacam, Orbscan, and ultrasound. Optom Vis Sci. 2005;82:892–899Available at: http://www.oculus.de/chi/downloads/dyn/sonstige/sonstige/lackner_pachymetry.pdfAccessed December 5, 2009
  3. O'Donnell C, Maldonado-Codina C. Agreement and repeatability of central thickness measurement in normal corneas using ultrasound pachymetry and the OCULUS. Pentacam. Cornea. 2005;24:920–924
  4. Amano S, Honda N, Amano Y, Yamagami S, Miyai T, Samejima T, et al. Comparison of central corneal thickness measurements by rotating Scheimpflug camera, ultrasonic pachymetry, and scanning-slit corneal topography. Ophthalmology. 2006;113:937–941
  5. Shankar H, Taranath D, Santhirathelagan CT, Pesudovs K. Anterior segment biometry with the Pentacam: comprehensive assessment of repeatability of automated measurements. J Cataract Refract Surg. 2008;34:103–113
  6. Shankar H, Taranath D, Santhirathelagan CT, Pesudovs K. Repeatability of corneal first-surface wavefront aberrations measured with Pentacam corneal topography. J Cataract Refract Surg. 2008;34:727–734
  7. Roberts C, Züger BJ. GALILEI dual Scheimpflug analyzer. In:  Netto MV,  Ambrósio R,  Schor P,  Chalita MR,  Chamon W editor. Wavefront, Topografia e Tomografia da Córnea e Segmento Anterior; Atualização Propedêutica em Cirurgia Refrativa. Rio de Janeiro, Brazil: Cultura Médica; 2006;p. 177–182
  8. Shirayama M, Wang L, Weikert MP, Koch DD. Comparison of corneal powers obtained from 4 different devices. Am J Ophthalmol. 2009;148:528–535
  9. Menassa N, Kaufmann C, Goggin M, Job OM, Bachmann LM, Thiel MA. Comparison and reproducibility of corneal thickness and curvature readings obtained by the Galilei and the Orbscan II analysis systems. J Cataract Refract Surg. 2008;34:1742–1747
  10. Thibos LN, Wheeler W, Horner D. Power vectors: an application of Fourier analysis to the description and statistical analysis of refractive error. Optom Vis Sci. 1997;74:367–375Available at: http://research.opt.indiana.edu/Library/AnalyzingAstigmatism/AnalyzingAstigmatism.htmlAccessed December 4, 2009
  11. Bland JM, Altman DG. Statistical notes: measurement error. BMJ. 1996;313:744
  12. Piñero DP, Saenz González C, Alió JL. Intraobserver and interobserver repeatability of curvature and aberrometric measurements of the posterior corneal surface in normal eyes using Scheimpflug photography. J Cataract Refract Surg. 2009;35:113–120
  13. Liu Z, Pflugfelder SC. Corneal surface regularity and the effect of artificial tears in aqueous tear deficiency. Ophthalmology. 1999;106:939–943
  14. Goto T, Zheng X, Klyce SD, Kataoka H, Uno T, Karon M, et al. A new method for tear film stability analysis using videokeratography. Am J Ophthalmol. 2003;135:607–612
  15. Montés-Micó R, Alió JL, Muñoz G, Charman WN. Temporal changes in optical quality of air-tear film interface at anterior cornea after blink. Invest Ophthalmol Vis Sci. 2004;45:1752–1757Available at: http://www.iovs.org/cgi/reprint/45/6/1752Accessed December 3, 2009
  16. Koh S, Maeda N, Hirohara Y, Mihashi T, Ninomiya S, Bessho K, et al. Serial measurements of higher-order aberrations after blinking in normal subjects. Invest Ophthalmol Vis Sci. 2006;47:3318–3324Available at: http://www.iovs.org/cgi/reprint/47/8/3318Accessed December 3, 2009

 Additional financial disclosures: Dr. Wang received research support and Dr. Shirayama received travel support from the Ziemer Group, Port, Switzerland.

 Supported in part by an unrestricted grant from Research to Prevent Blindness, New York, New York, USA.

PII: S0886-3350(09)01129-8

doi: 10.1016/j.jcrs.2009.09.034

Journal of Cataract & Refractive Surgery
Volume 36, Issue 3 , Pages 425-430 , March 2010