Method of determining an ophthalmic lens

(canceled)

A simulator of an image seen by a wearer through an ophthalmic lens, the simulator comprising calculation means adapted to implement a simulation method comprising the steps of:

• measuring, on the wearer in binocular vision, three-dimensional coordinates of the center of rotation of the wearer's eye;
• measuring at least one direction of gaze in a natural posture, positioning of the lens, the steps of measuring and positioning taking place in or being reduced to the same reference frame, calculating an image seen by the wearer using ray tracing, taking into account the measured position of the center of rotation of the eye, the direction of gaze measured in a natural posture and position of the lens, and means for displaying the image calculated by the calculation means.

(canceled)

A computer program product comprising program code means stored on a medium readable by a computer, to implement the method comprising the steps of measuring, on the wearer in binocular vision, three-dimensional coordinates of the a center of rotation of the wearer's eye;

• measuring at least one direction of gaze in a natural posture;
• determining the a desired position of the ophthalmic lens;
• calculating characteristics of the ophthalmic lens by using the coordinates measured for the center of rotation of the eye, the determined position of the lens and the at least one direction of gaze measured in a natural posture when said program product is run on a computer.

(canceled)

A computer program product comprising program code means stored on a medium readable by a computer to implement a method of simulating an image seen by a wearer through an ophthalmic lens, comprising the steps of:

• measuring, on the wearer in binocular vision, three-dimensional coordinates of the center of rotation of the wearer's eye;
• measuring at least one direction of gaze in a natural posture, positioning of the lens, the steps of measuring and positioning taking place in or being reduced to the same reference frame, calculating an image seen by the wearer using ray tracing, taking into account the measured position of the center of rotation of the eye, the direction of gaze measured in a natural posture and position of the lens, when said program product is run on a computer.