The application relates to a method for planning a refractive treatment of an eye of a patient. The method comprises deriving an influence matrix from a plurality of prior eye treatments by, for each prior eye treatment of an associated eye, determining an intended refractive correction vector (IRC) characterizing a difference between measured pre-treatment high-order aberrations of the associated eye and a target refraction of the associated eye； and determining a surgically induced refractive correction vector (SIRC) of the associated eye characterizing a difference between the measured pre-treatment aberrations and measured posttreatment aberrations of the associated eye, wherein the influence matrix is derived so as to provide a correlation between the IRCs and the SIRCs； and defining or receiving a patient IRC vector characterizing a difference between measured pre-treatment high-order aberrations of the eye of the patient and a target refraction of the eye of the patient； adjusting the patient IRC vector based on the influence matrix.
