C

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Corneal Apex Thickness Measurements Using
Anterior Segment OCT and Single- and
Dual-Scheimpflug Topography Comparative Study
April 7-9, 2010Boston, MA USA

• César Bernilla MD, Luis Izquierdo MD, Ma
  Alejandra Henríquez MD

The authors have no financial interest in the
subject matter of this poster.
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PURPOSE

• To compare de corneal apex thickness measurements
  using non contact methods as are Visante OCT
  (software version 1.0.12.1896), Pentacam
  (software version 1.17r37) and Galilei (software
  version 5.0).

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METHODS

• Prospective, comparative, and double blinded
  study.
• Central corneal thickness (CCT) on 50 eyes of 25
  candidates for refractive surgery.
• Measurements were taken by three different
  researchers without knowing the previous results
  obtained by the other devices.

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METHODS

• We analyzed the thickness averages, maximum and
  minimum values, and their standard deviations.
  The statistical analysis was made using ANOVA
  testing and SPSS v 15.

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RESULTS

• Mean age was 30.8 years (SD5.736).
• The Mean corneal thickness at the apex for the
  Visante OCT was 530.02 30.682 um and for
  Pentacam was 554.76 32.028 um, and for Galilei
  was 562.38 29.21 um respectively.

SD standard desviation
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Figure 1. Mean Corneal thickness at the apex of
the cornea using the Visante, Pentacam and Galilei
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Table 1. Mean corneal thickness Difference
between the devices.
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Galilei
Pentacam
Visante
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CONCLUSION

• There is not a statistically significant
  difference between the values of corneal
  thickness at the apex of the cornea between
  Galilei and Pentacam.
• When compared the corneal apex thickness obtained
  with Visante OCT we found the average value is
  less than other devices.