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Impressum
Functional Optical Zone (FOZ) and Selective Corneal Aberration (SCOA) after refractive surgery
Berret R., Bende T., Jean B., Oltrup T., Ditzen K.
Universitäts-Augenklinik, Eberhard-Karls-Universität, Tübingen
Purpose: Aim of this study was to evaluate the Functional Optical
Zone (FOZ) for different refractive procedures using Selective Corneal
Aberration (SCOA) including the Modular Transfer Function (MTF).
Methods: Presented will be patients after myopic and hyperopic
PRK/LASIK with different laser systems for different treatment zone diameters,
patients post DTK, and patients with combined treatments of DTK and PRK/LASIK.
Assessment of FOZ, SCOA including MTF was performed with the new Windows
C-Scan Software tool based upon the individual topography.
Results: The new C-Scan software module allows for the first time
a fast and objective analyzing of the FOZ using SCOA including the MTF.
These information are beside the Visual Acuity important indicators for
the refractive outcome
Conclusion: The new C-Scan Windows Software is a powerful tool
to evaluate objectively the corneal surface after refractive surgery.
This allows to evaluate and optimize laser algorithms specially with regard
to customized ablation.