Precompensation

A technique in visual accessibility that pre-modifies displayed images in a way that is opposite to the optical distortion introduced by a user's eye, so that the image arriving at the retina more closely resembles the intended original. Precompensation works analogously to an audio equaliser that compensates for room acoustics: by applying the mathematical inverse of the user's Point Spread Function (obtained from a wavefront analyser measurement of their eye), the algorithm produces a pre-distorted image that, after passing through the user's aberrated optical system, appears clearer on the retina. This approach differs from conventional visual accessibility strategies like magnification or contrast enhancement because it addresses the specific optical characteristics of each individual user's eyes rather than applying generic adjustments.