Apparatus and method for subjectively refining a corrective prescription bas ed on feedback from a patient. Subjective refinement of a corrective prescripti on is accomplished by measuring aberrations of a wavefront emanating from the eye, computing a proposed corrective prescription based on the measured aberrations presenting to the patient an image reflecting the proposed corrective prescription, and varying the proposed corrective prescription based on feedback from the patient through an input device coupled to the processor to obtain the preferred corrective prescription.
SUBJECTIVE REFINEMENT OF WAVEFRONT MEASUREMENTS