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Impressum
Selective Corneal Aberrometry with a Placido-Topometer
Bende T., Jean B., Berret R., Oltrup T.
Universitäts-Augenklinik, Eberhard-Karls-Universität Tübingen
Purpose: Selective Corneal Aberrometry (SCOA) and its components
with regard to optimizing the outcome after refractive surgery will be
demonstrated.
Methods: With the new C-Scan Windows software it is for the first
time possible to evaluate the optical quality of the cornea with very
high resolution qualitatively and quantitatively. Result is the Surface
Quality Map (SQM) which allows interpretation of corneal aberration and
assessment of the Functional Optical Zone (FOZ). Modular Transfer Function
(MTF), Phase shift and Point Spread function (PSF) are also assessable.
Results: The factors presented here describe the most relevant
parameters of optical corneal quality, which in general is changed after
refractive surgery (until now mostly decreased).
Conclusion: Based on the content of SCOA, the platform for customized
refractive surgery is created. Optical quality is beneath the Visual Acuity
a major criterion to qualify outcome after refractive surgery. Unknown
is, if total aberration (wavefront), which includes the age-dependent
aberration of the lens, is necessary or not.