1. A system for determining an optical acuity measure of an eye, the system comprising: a) a module that determines a point spread function based on a wavefront measurement of an eye; b) a module that centers the point spread function with respect to the center of the resolution target; c) a module that convolves a resolution target with the point spread function to produce an image; and d) a module that determines the optical acuity measure of the eye based on the image.