Journal of Korean Clinical Health Science (한국임상보건과학회지)

The Korean Society of Clinical Health Science (한국임상보건과학회)
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Analysis of Corneal Topography in Keratoconus

원추각막의 각막지형도 분석

  • 김덕훈 (마산대학교 안경광학과)
  • Received : 2016.07.05
  • Accepted : 2016.07.30
  • Published : 2016.09.30
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Abstract

The analysis of cornea morphology using corneal topographers is a clinical practice for the diagnosis of keratoconus in contact lens fitting. The recently technique has developed with the possibility of achieving a great number of measuring points of both anterior and posterior corneal surfaces in cornea. Also these data are used to extract a series of topographic valuation indices that permit to offer the most exact clinical diagnosis of keratoconus in contact lens fitting. This study describes the technologies in which current corneal topographers are based on the morphological characteristics that the keratoconus status observe on corneal surface. Therefore, this paper can provide that the analysis of corneal topographers applied for the diagnosis of keratoconus in contact lens fitting.

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References

  1. Guemez-Sandoval E, Guemez-Sandoval JC. Representaciones anatomicas delojo a traves de la historia. De Hipocrates a Mollineti. Revista Mexicana de Oftalmologia. 2009; 83(3):186-191.
  2. Gutmark R, Guyton DL. Origins of the keratometer and its evolving role inophthalmology. Surv Ophthalmol. 2010; 55(5):481-497. https://doi.org/10.1016/j.survophthal.2010.03.001
  3. Nover A. 100 years of ophthalmology. Fortschr Med. 1982;100(47-48):2222-7.
  4. Sulek K. Prize for Allvar Gullstrand in 1911 for works on dioptrics of the eye.Wiad Lek. 1967;20(14):1417.
  5. Timoney PJ, Breathnach CS. Allvar Gullstrand and the slit lamp 1911.Ir J Med Sci. 2013;182(2):301-305. https://doi.org/10.1007/s11845-012-0873-y
  6. Klyce SD. Computer-assisted corneal topography. High-resolution graphicpresentation and analysis of keratoscopy. Invest Ophthalmol Vis Sci. 1984;25(12):1426-1435.
  7. Maldonado MJ, Nieto JC, Pinero DP. Advances in technologies for laser-assisted in situ keratomileusis (LASIK) surgery. Expert Rev Med Devices. 2008;5(2):209-229. https://doi.org/10.1586/17434440.5.2.209
  8. Ambrosio Jr R, Caiado AL, Guerra FP, Louzada R, Roy AS, Luz A, et al. Novel pachymetric parameters based on corneal tomography for diagnosing keratoconus. J Refract Surg. 2011;27(10):753-758. https://doi.org/10.3928/1081597X-20110721-01
  9. Pinero DP, Nieto JC, Lopez-Miguel A. Characterization of corneal structure in keratoconus. J Cataract Refract Surg. 2012; 38(12):2167-2183. https://doi.org/10.1016/j.jcrs.2012.10.022
  10. Pinero DP. Technologies for anatomical and geometric characterization of the corneal structure and anterior segment: a review. Semin Ophthalmol. 2015;30(3):161-170. https://doi.org/10.3109/08820538.2013.835844
  11. Ambrosio Jr R, Valbon BF, Faria-Correia F, Ramos I, Luz A. Scheimpflug imaging for laser refractive surgery. Curr Opin Ophthalmol. 2013;24(4):310-320. https://doi.org/10.1097/ICU.0b013e3283622a94
  12. Goldberg AV, Tarjan RE. Efficient maximum flow algorithms. Commun ACM. 2014;57(8):82-89. https://doi.org/10.1145/2628036
  13. Maldonado MJ, Nieto JC, Díez-Cuenca M, Pinero DP. Repeatability and reproducibility of posterior corneal curvature measurements by combined scanning-slit and placido-disc topography after LASIK. Ophthalmology. 2006;113(11):1918-1926. https://doi.org/10.1016/j.ophtha.2006.05.053
  14. Karpecki PM. Bausch & Lomb Orbscan II/IIz anterior segment analysis system. In: Wang M, editor. Corneal topography in the wavefront era. Thorofare: Slack Inc.; 2006.
  15. Fernandez-Garcia P, Cervino A, Quiles- Guinau L, Albarran-Diego C, Garcia-Lazaro S, Sanchis-Gimeno JA. Corneal thickness differences between sexes after oxybuprocaine eye drops. Optom Vis Sci. 2015;92(1):89-94. https://doi.org/10.1097/OPX.0000000000000449
  16. Merklinger HM. Focusing the view camera: a scientific way to focus the view camera and estimate depth of field. Canada: Paperback; 1993.
  17. DubbelmanM, Sicam VA, Van der Heijde GL. The shape of the anterior and posterior surface of the aging human cornea. Vision Res. 2006;46(6-7):993-1001. https://doi.org/10.1016/j.visres.2005.09.021
  18. Pinero DP, Saenz Gonzalez C, Alio 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(1):113-120. https://doi.org/10.1016/j.jcrs.2008.10.010
  19. Kanellopoulos AJ, Asimellis G. Forme Fruste Keratoconus Imaging and Validation via Novel Multi-Spot Reflection Topography. Case Rep Ophthalmol. 2013; 4(3):199-209. https://doi.org/10.1159/000356123
  20. Kanellopoulos AJ, Asimellis G. Clinical Correlation between Placido, Scheimpflug and LED Color Reflection Topographies in Imaging of a Scarred Cornea. Case Rep Ophthalmol. 2014;5(3):311-317. https://doi.org/10.1159/000365962
  21. Klijn S, Reus NJ, Sicam VA. Evaluation of keratometry with a novel Color-LED corneal topographer. J Refract Surg. 2015;31(4): 249-256. https://doi.org/10.3928/1081597X-20150212-01
  22. Buey Salas MA, Peris MC, Biomecanica Arquitecturs Corneal, Spain,Elsevier, 2014.
  23. Gomes JA, Tan D, Rapuano CJ, Belin MW, Ambrosio Jr R, Guell JL, et al. Global consensus on keratoconus and ectatic diseases. Cornea. 2015;34(4):359-369. https://doi.org/10.1097/ICO.0000000000000408
  24. McGhee CN, Kim BZ, Wilson PJ. Contemporary Treatment Paradigms in Keratoconus. Cornea. 2015;34 Suppl 10: S16-23. https://doi.org/10.1097/ICO.0000000000000504
  25. Zadnik K, Barr JT, Edrington TB, Everett DF, Jameson M, McMahon TT, et al. Baseline findings in the Collaborative Longitudinal Evaluation of Keratoconus (CLEK) Study. Invest Ophthalmol Vis Sci. 1998;39(13):2537-2546.
  26. Wilson SE, Lin DT, Klyce SD. Corneal topography of keratoconus. Cornea. 1991; 10(1):2-8. https://doi.org/10.1097/00003226-199101000-00002
  27. Prisant O, Legeais JM, Renard G. Superior keratoconus. Cornea. 1997;16(6):693-694.
  28. Weed KH, McGhee CN, MacEwen CJ. Atypical unilateral superior keratoconus in young males. Cont Lens Anterior Eye. 2005;28(4):177-179. https://doi.org/10.1016/j.clae.2005.10.002
  29. Schlegel Z, Hoang-Xuan T, Gatinel D. Comparison of and correlation between anterior and posterior corneal elevation maps in normal eyes and keratoconus-suspect eyes. J Cataract Refract Surg. 2008;34(5): 789-795. https://doi.org/10.1016/j.jcrs.2007.12.036
  30. Montalban R, Pinero DP, Javaloy J, Alio JL. Scheimpflug photography-based clinical characterization of the correlation of the corneal shape between the anterior and posterior corneal surfaces in the normal human eye. J Cataract Refract Surg. 2012;38(11):1925-1933. https://doi.org/10.1016/j.jcrs.2012.06.050
  31. Montalban R, Pinero DP, Javaloy J, Alio JL. Corrrelation of the corneal toricity between anterior and posterior corneal surfaces in the normal human eye. Cornea. 2013;32(6): 791-798. https://doi.org/10.1097/ICO.0b013e31827bf898
  32. Montalban R, Alio JL, Javaloy J, Pinero DP. Correlation of anterior and posterior corneal shape in keratoconus. Cornea. 2013;32(7): 916-921. https://doi.org/10.1097/ICO.0b013e3182904950
  33. Tomidokoro A, Oshika T, Amano S, Higaki S, Maeda N, Miyata K. Changes in anterior and posterior corneal curvatures in keratoconus. Ophthalmology. 2000;107(7): 1328-1332. https://doi.org/10.1016/S0161-6420(00)00159-7
  34. Smolek MK, Klyce SD, Hovis JK. The Universal Standard Scale: proposed improvements to the American National Standards Institute (ANSI) scale for corneal topography. Ophthalmology. 2002;109(2): 361-369. https://doi.org/10.1016/S0161-6420(01)00888-0
  35. Ambrosio Jr R, Nogueira LP, Caldas DL, Fontes BM, Luz A, Cazal JO, et al. Evaluation of corneal shape and biomechanics before LASIK. Int Ophthalmol Clin. 2011;51(2):11-38. https://doi.org/10.1097/IIO.0b013e31820f1d2d
  36. Rabinowitz YS. Tangential vs sagittal videokeratographs in the "early" detection of keratoconus. Am J Ophthalmol. 1996; 122(6):887-889. https://doi.org/10.1016/S0002-9394(14)70388-5
  37. Chan JS, Mandell RB, Burger DS, Fusaro RE. Accuracy of videokeratography for instantaneous radius in keratoconus. Optom Vis Sci. 1995;72(11):793-799. https://doi.org/10.1097/00006324-199511000-00004
  38. Szczotka LB, Thomas J. Comparison of axial and instantaneous videokeratographic data in keratoconus and utility in contact lens curvature prediction. CLAO J. 1998; 24(1):22-28.
  39. de Sanctis U, Loiacono C, Richiardi L, Turco D, Mutani B, Grignolo FM. Sensitivity and specificity of posterior corneal elevation measured by Pentacam in discriminating keratoconus/subclinical keratoconus. Ophthalmology. 2008;115(9): 1534-1539. https://doi.org/10.1016/j.ophtha.2008.02.020
  40. Khachikian SS, Belin MW. Posterior elevation in keratoconus. Ophthalmology. 2009;116(4):816. 816. e1; author reply 816-817. https://doi.org/10.1016/j.ophtha.2009.01.007
  41. Emre S, Doganay S, Yologlu S. Evaluation of anterior segment parameters in keratoconic eyes measured with the Pentacam system. J Cataract Refract Surg. 2007;33(10):1708-1712. https://doi.org/10.1016/j.jcrs.2007.06.020
  42. Alio JL, Pinero DP, Aleson A, Teus MA, Barraquer RI, Murta J, et al. Keratoconusintegrated characterization considering anterior corneal aberrations, internal astigmatism, and corneal biomechanics. J Cataract Refract Surg. 2011;37(3):552-568. https://doi.org/10.1016/j.jcrs.2010.10.046
  43. Ambrósio Jr R, Alonso RS, Luz A, Coca Velarde LG. Corneal-thickness spatial profile and corneal-volume distribution: tomographic indices to detect keratoconus. J Cataract Refract Surg.2006;32(11):1851-1859. https://doi.org/10.1016/j.jcrs.2006.06.025
  44. Saad A, Gatinel D. Topographic and tomographic properties of forme fruste keratoconus corneas. Invest Ophthalmol Vis Sci. 2010;51(11):5546-5555. https://doi.org/10.1167/iovs.10-5369
  45. Patrick J.C., Mark A.A., Craig N, Contact Lens, A Cordinal publication, 1977.