Method and system for adjusting progressive lenses for a patient

Details Method and system for adjusting progressive lenses for a patient Method and system for adjusting progressive lenses for a patient

1997-07-02

1999-11-16

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351169, 351178, 351204, G02C 702

Patent

active

059844736

ABSTRACT:
A method and a system of adjusting a progressive lens relative to the frame of a patient's spectacles. The lens has power and distortions distributions and far and near vision zones and is selected inter alia in accordance with respective prescribed first and second values of the optical power required for the patient's eye at its reading and distance vision. A direction of a line of sight of the patient's eye at the reading vision, relative to the frame of the spectacles, is determined. The lens is positioned and oriented relative to the frame so as to ensure that the line of sight passes through the near vision zone of the progressive lens.

REFERENCES:
patent: 3454331 (1969-07-01), Maritenaz et al.
patent: 4167067 (1979-09-01), Guiset
patent: 4368958 (1983-01-01), Buget
patent: 5640775 (1997-06-01), Marshall
patent: 5691799 (1997-11-01), Ramachandran

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