Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2007-03-15
2009-12-29
Schwartz, Jordan M. (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S176000, C351S177000
Reexamination Certificate
active
07637614
ABSTRACT:
A method for the determination of a progressive ophthalmic lens for a given wearer comprises the stages of:determining the axial length (LA) of the wearer's eye,determining an ergorama associating a sight point with each direction of viewing under wearing conditions,determining power and resulting astigmatism defect targets for each direction of viewing under wearing conditions, the targets being a function of the axial length of the wearer's eye,calculating the power required on the lens for each direction of viewing by successive iterations in order to obtain the target power defect and the target resulting astigmatism.
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Berthezene Marie-Anne
Carimalo Celine
De Gaudemaris Diane
Guilloux Cyril
Essilor International "Compagnie Generale d'Optique"
Hensley Kim & Holzer LLC
Schwartz Jordan M.
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