Abstract
In the present work, we offer a theoretical analysis of retinal image quality for different groups of myopes (-2D, -4D, -8D, -12D) subjected to refractive surgery. For this, the polychromatic optical MTF (modulation transfer function) corresponding to the far point of a myopic eye was compared with the image for the infinity point after refractive surgery. The optical quality of the retinal image was studied, considering the defocusing corresponding to chromatic aberration and the spherical aberration. The results for retinal image quality show a general deterioration, which was accentuated with the degree of myopia. The results suggest that refractive surgery could be improved by modifying the asphericity of the anterior surface of the cornea, which, in addition to making the eye emetropic, would optimize the MTF of the subjects. We also present a theoretical analysis involving non-spherical surfaces before and after operation, testing the influence of corneal asphericity in this case, as well as the possible optimization of the polychromatic MTF.
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