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Point-Spread-Function

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Topography (curvature radius [mm] as function of location) of a "normal" eye with prolate cornea.

Topography (curvature radius [mm] as function of location) of an eye after Lasik with oblate cornea.

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Point-Spread-Function for the eye shown in the upper left picture, with an IOL which causes paraxial emmetropia and corrects the little astigmatism. Pupil width is 3.5mm

Point-Spread-Function for the eye shown in the upper right picture, with an IOL which causes paraxial emmetropia and corrects the little astigmatism. Pupil width is 3.5mm