Patent ID: 9164295
Filing Date: 2015-10-20
Classification: A61B,G02C

Abstract:
1. A method of producing a lens based on a prescription for an eye of a patient expected to gaze in at least two different directions, including: an indication of the at least two different directions of gaze; an indication of eye's sphere power, cylinder and cylinder axis in one of the at least two different directions of gaze one of which differs horizontally from a straight-ahead direction; and an indication of eye's sphere power, cylinder and cylinder axis, in the other one of the at least two different directions of gaze, the method comprising: designing the lens as having a number of design points corresponding to the at least two different directions of gaze indicated in the prescription, the number of design points being defined by the same parameters as those indicated in the prescription for their respective directions of gaze; and manufacturing the lens corresponding to the above design; wherein the indications of the eye's sphere power, cylinder and cylinder axis in the at least two directions of gaze are obtained by measurement; wherein the indication of the at least two directions of gaze includes an indication of a horizontal angle of the at least one of the two directions of gaze, in which the direction of gaze in a horizontal direction differs from the straight-ahead direction.