Method for the determination of a progressive ophthalmic lens

Details Method for the determination of a progressive ophthalmic lens Method for the determination of a progressive ophthalmic lens

G - Physics

02

C

G02C 7/02 (2006.01) G02C 13/00 (2006.01)

Patent

CA 2580216

A method for the determination by optical optimization of a personalized progressive ophthalmic lens intended to be inserted into a frame chosen by a given wearer for whom a power addition has been prescribed in near vision, the method comprising the stages of: - determining at least one parameter representing the frame chosen by the wearer; - measuring parameters representing the wearer's head-eye behaviour; - weighting the parameters representing the wearer's head-eye behaviour with the parameter representing the frame chosen by the wearer; - determining power and resulting astigmatism defect targets for each direction of viewing under wearing conditions, the targets being associated with an individual merit function taking into account the weighted head-eye coordination parameters. The method allows the design of the lens to be adapted to the size and the shape of the frame chosen.

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