Patent ID: 8342684

Claim:
A method of determining a customised refractive correction for an eye of a patient to inhibit the progression of myopia in that eye, the eye having a central optic axis, a temporal quadrant, a nasal quadrant and a horizontal meridian passing through the temporal and nasal quadrants, said method comprising: measuring central aberrations within a central area of the eye that subtends an angle of less than 10° from the optic axis sufficient to specify a base central correction of said central aberrations that will provide clear vision in a central zone of the eye, measuring peripheral aberrations in an annular peripheral area of the eye that subtends angles greater than 20° from the optical axis sufficient to specify a base peripheral correction of said peripheral aberrations in a peripheral zone of the eye, modifying said base peripheral correction to incorporate an amount of myopic defocus determined by at least one of (a) the patient's predisposition to myopia, (b) the patient's lifestyle, and (c) the nature and degree of said peripheral aberrations of the eye, to thereby create a base customised refractive correction for that eye, determining said patient's predisposition to myopia by having regard to at least one of (a) the patient's genetic predisposition and (b) the patient's youthfulness, and having regard to said genetic predisposition by averaging the central refractive errors of the four eyes of the patient's parents to obtain an average myopic error, and increasing said myopic defocus according to the magnitude of said average myopic error.