Optical Transfer Function in Corneal Topography for Clinical Contrast Sensitivity Analysis

摘要

Customised ablation aiming to optimise visual acuity in refractive surgery requires objective data on corneal surface, like the contrast sensitivity. Fast ray tracing, using the high resolution 3-D elevation data in conjunction with Snell's law describe the diffraction of the incident rays and the resulting image on a "virtual retina". A retroprojection leads to a "surface quality map".