December 2002
Volume 43, Issue 13
ARVO Annual Meeting Abstract  |   December 2002
Keratoconus Followup Through Elevation Topography
Author Affiliations & Notes
  • AF Aguirre
    Cornea Department Hosp Nuestra Senora De La Luz Mexico City Mexico
  • O Baca
    Mexico City Mexico
  • R Velasco
    Mexico City Mexico
  • M Sanchez
    Mexico City Mexico
  • Footnotes
    Commercial Relationships   A.F. Aguirre, None; O. Baca , None; R. Velasco , None; M. Sanchez , None.
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 3233. doi:
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      AF Aguirre, O Baca, R Velasco, M Sanchez; Keratoconus Followup Through Elevation Topography . Invest. Ophthalmol. Vis. Sci. 2002;43(13):3233.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract: : Purpose: To determine if the different patterns presented by elevation topographic system in patients with keratoconus are able to change across the time. Methods: This is a prospective and longitudinal study in which we took 2 elevation topography maps to patients with keratoconus and compared them to the elevation topographic patterns according to the Aguirre-Baca classification. Results: We reviewed 40 eyes of 21 patients; we found 20 patients with topographic pattern one, 10 with pattern II, 7 with pattern III, 3 with pattern IV, and we found progression in 12 eyes: 4 eyes with topographic pattern I, 5 eyes with pattern II, 1 eye with pattern III and in 2 eyes with pattern IV. The mean age in patients with topographic pattern progression was 29±6 years old and in the eyes without progression was 31±14 years old. The mean apex in eyes with pattern progression was 27.12 µc and in those eyes without pattern progression was 30.04µc. Pattern progression and apex was correlated with the t Student test in which we found in right eye t= 14.3, p<0.001 before and t= 10.7 p<0.0001 after, and left eye t= 9.7 p<0.0001 which confirmed that although the progression of the topographic pattern, the apex diminished ; and the mean time between the 2 maps was 12.75 months and in the eyes without progression was 10.07 months. Conclusion: The different topographic patterns presented by Aguirre-Baca classification progressed across the time and progression is not synonymous to apex elevation; for this reason we consider that this classification is a new way to evaluate evolution in keratoconus.

Keywords: 599 topography • 356 clinical (human) or epidemiologic studies: systems/equipment/techniques • 369 cornea: clinical science 

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