Table of Contents Author Guidelines Submit a Manuscript
Journal of Ophthalmology
Volume 2016, Article ID 6392472, 9 pages
http://dx.doi.org/10.1155/2016/6392472
Research Article

Rotating Scheimpflug Imaging Indices in Different Grades of Keratoconus

1Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt
2Al Watany Eye Hospitals, 211 Alhegaz Street, Alhegaz Square, Heliopolis, Cairo 11361, Egypt

Received 9 March 2016; Revised 26 June 2016; Accepted 10 July 2016

Academic Editor: Sang Beom Han

Copyright © 2016 Sherine S. Wahba et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. R. Ambrósio Jr., A. L. C. Caiado, F. P. Guerra et al., “Novel pachymetric parameters based on corneal tomography for diagnosing keratoconus,” Journal of Refractive Surgery, vol. 27, no. 10, pp. 753–758, 2011. View at Publisher · View at Google Scholar · View at Scopus
  2. M. W. Belin, D. Litoff, S. J. Strods, S. S. Winn, and R. S. Smith, “The PAR technology corneal topography system,” Refractive and Corneal Surgery, vol. 8, no. 1, pp. 88–96, 1992. View at Google Scholar · View at Scopus
  3. M. K. Smolek, “What is keratoconus?” in Modern Management of Keratoconus, B. S. Boxer Wachler, Ed., p. 3, Jaypee Brothers Medical Publishers, New Delhi, India, 1st edition, 2008. View at Google Scholar
  4. R. Ambrósio, D. G. Dawson, and M. W. Belin, “Association between the percent tissue altered and post-laser in situ keratomileusis ectasia in eyes with normal preoperative topography,” American Journal of Ophthalmology, vol. 158, no. 6, pp. 1358–1359, 2014. View at Publisher · View at Google Scholar · View at Scopus
  5. D. Z. Reinstein, T. J. Archer, and M. Gobbe, “Corneal epithelial thickness profile in the diagnosis of keratoconus,” Journal of Refractive Surgery, vol. 25, no. 7, pp. 604–610, 2009. View at Publisher · View at Google Scholar · View at Scopus
  6. M. W. Belin, S. S. Khachikian, and R. Ambrosio, “Understanding elevation based topography: how elevation data is displayed,” in Elevaton Based Corneal Tomography, M. W. Belin, S. S. Khachikian, and R. Ambrosio, Eds., chapter 3, pp. 25–46, Jaypee—Highlights Medical Publishers, Inc. Panama, 2nd edition, 2012. View at Google Scholar
  7. S. Ramamurthy, J. C. Reddy, and V. Jhanji, “Topography and tomography in the diagnosis of corneal ectasia,” Expert Review of Ophthalmology, vol. 10, no. 3, pp. 215–228, 2015. View at Publisher · View at Google Scholar · View at Scopus
  8. G. Labiris, A. Giarmoukakis, A. Koutras, T. Chrysochou, H. Sideroudi, and V. P. Kozobolis, “Clinical usefulness of best-fit toric ellipsoid reference body in ectatic and crosslinked corneas,” Journal of Cataract & Refractive Surgery, vol. 41, no. 4, pp. 889–891, 2015. View at Publisher · View at Google Scholar · View at Scopus
  9. I. Kovács, K. Miháltz, M. Ecsedy, J. Németh, and Z. Z. Nagy, “The role of reference body selection in calculating posterior corneal elevation and prediction of keratoconus using rotating Scheimpflug camera,” Acta Ophthalmologica, vol. 89, no. 3, pp. e251–e256, 2011. View at Publisher · View at Google Scholar · View at Scopus
  10. G. Labiris, A. Giarmoukakis, A. Rampotas et al., “Variability of different reference bodies in normal, keratoconus, and collagen crosslinked corneas,” European Journal of Ophthalmology, vol. 25, no. 6, pp. 468–473, 2015. View at Publisher · View at Google Scholar · View at Scopus
  11. M. K. Smolek and B. S. Boxer Wachler, “Corneal topography,” in Modern Management of Keratoconus, B. S. Boxer Wachler, Ed., p. 35, Jaypee, New Delhi, India, 1st edition, 2008. View at Google Scholar
  12. Allegro Oculyzer 1074 user manual en/Rev.5/10-11-02 Item No.: 6654 2001, WaveLight GmbH, Germany.
  13. E. R. DeLong, D. M. DeLong, and D. L. Clarke-Pearson, “Comparing the areas under two or more correlated receiver operating characteristic curves: a nonparametric approach,” Biometrics, vol. 44, no. 3, pp. 837–845, 1988. View at Publisher · View at Google Scholar · View at Zentralblatt MATH · View at Scopus
  14. P. S. Binder, R. L. Lindstrom, R. D. Stulting et al., “Keratoconus and corneal ectasia after LASIK,” Journal of Cataract and Refractive Surgery, vol. 31, no. 11, pp. 2035–2038, 2005. View at Publisher · View at Google Scholar · View at Scopus
  15. M. W. Belin and S. S. Khachikian, “New devices and clinical implications for measuring corneal thickness,” Clinical & Experimental Ophthalmology, vol. 34, no. 8, pp. 729–731, 2006. View at Publisher · View at Google Scholar · View at Scopus
  16. H. Sideroudi, G. Labiris, A. Giarmoukakis, N. Bougatsou, and V. Kozobolis, “Contribution of reference bodies in diagnosis of keratoconus,” Optometry and Vision Science, vol. 91, no. 6, pp. 676–681, 2014. View at Publisher · View at Google Scholar · View at Scopus
  17. T. C. Y. Chan, D. Liu, M. Yu, and V. Jhanji, “Longitudinal evaluation of posterior corneal elevation after laser refractive surgery using swept-source optical coherence tomography,” Ophthalmology, vol. 122, no. 4, pp. 687–692, 2015. View at Publisher · View at Google Scholar · View at Scopus
  18. B. Wang, Z. Zhang, R. K. Naidu et al., “Comparison of the change in posterior corneal elevation and corneal biomechanical parameters after small incision lenticule extraction and femtosecond laser-assisted LASIK for high myopia correction,” Contact Lens & Anterior Eye, vol. 39, no. 3, pp. 191–196, 2016. View at Publisher · View at Google Scholar · View at Scopus
  19. A. Saad and D. Gatinel, “Screening for keratoconus: lack of a scientific base regarding the global consensus?” Cornea, vol. 34, no. 11, pp. e33–e34, 2015. View at Google Scholar · View at Scopus
  20. F. F. Correia, I. Ramos, B. Lopes et al., “Topometric and tomographic indices for the diagnosis of keratoconus,” International Journal of Keratoconus and Ectatic Corneal Diseases, vol. 1, no. 2, pp. 92–99, 2012. View at Publisher · View at Google Scholar
  21. R. Ambrósio Jr., L. P. Nogueira, D. L. Caldas et al., “Evaluation of corneal shape and biomechanics before LASIK,” International Ophthalmology Clinics, vol. 51, no. 2, pp. 11–38, 2011. View at Publisher · View at Google Scholar · View at Scopus
  22. M. W. Belin and R. Ambrósio Jr., “Corneal ectasia risk score: statistical validity and clinical relevance,” Journal of Refractive Surgery, vol. 26, no. 4, pp. 238–240, 2010. View at Publisher · View at Google Scholar · View at Scopus
  23. R. L. Epstein, Y.-L. Chiu, and G. L. Epstein, “Pentacam HR criteria for curvature change in keratoconus and postoperative LASIK ectasia,” Journal of Refractive Surgery, vol. 28, no. 12, pp. 890–894, 2012. View at Publisher · View at Google Scholar · View at Scopus
  24. A. J. Kanellopoulos and G. Asimellis, “Revisiting keratoconus diagnosis and progression classification based on evaluation of corneal asymmetry indices, derived from scheimpflug imaging in keratoconic and suspect cases,” Clinical Ophthalmology, vol. 7, pp. 1539–1548, 2013. View at Publisher · View at Google Scholar · View at Scopus
  25. U. de Sanctis, C. Loiacono, L. Richiardi, D. Turco, B. Mutani, and F. M. Grignolo, “Sensitivity and specificity of posterior corneal elevation measured by pentacam in discriminating keratoconus/subclinical keratoconus,” Ophthalmology, vol. 115, no. 9, pp. 1534–1539, 2008. View at Publisher · View at Google Scholar · View at Scopus
  26. J. H. Krumeich, J. Daniel, and A. Knalle, “Live-epikeratophakia for keratoconus,” Journal of Cataract and Refractive Surgery, vol. 24, no. 4, pp. 456–463, 1998. View at Publisher · View at Google Scholar · View at Scopus
  27. R. Ishii, K. Kamiya, A. Igarashi, K. Shimizu, Y. Utsumi, and T. Kumanomido, “Correlation of corneal elevation with severity of keratoconus by means of anterior and posterior topographic analysis,” Cornea, vol. 31, no. 3, pp. 253–258, 2012. View at Publisher · View at Google Scholar · View at Scopus
  28. K. Kamiya, R. Ishii, K. Shimizu, and A. Igarashi, “Evaluation of corneal elevation, pachymetry and keratometry in keratoconic eyes with respect to the stage of Amsler-Krumeich classification,” British Journal of Ophthalmology, vol. 98, no. 4, pp. 459–463, 2014. View at Publisher · View at Google Scholar · View at Scopus
  29. J. B. Randleman, J. Akhtar, M. J. Lynn et al., “Comparison of objective and subjective refractive surgery screening parameters between regular and high-resolution Scheimpflug imaging devices,” Journal of Cataract & Refractive Surgery, vol. 41, no. 2, pp. 286–294, 2015. View at Publisher · View at Google Scholar · View at Scopus