Multifocal ophthalmic lenses

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks

Reexamination Certificate

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Reexamination Certificate

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06986578

ABSTRACT:
The invention provides lenses for correcting presbyopia in which the near vision segments interfere at least about 50% less with distance vision than do the near vision segments in conventional contact lenses.

REFERENCES:
patent: 4778462 (1988-10-01), Grendahl
patent: 4798609 (1989-01-01), Grendahl
patent: 5198844 (1993-03-01), Roffman et al.
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patent: 5812237 (1998-09-01), Roddy
patent: 5971541 (1999-10-01), Danker et al.
patent: 6554425 (2003-04-01), Roffman et al.
patent: 0 107 444 (1984-05-01), None
patent: 0 553 959 (1993-08-01), None
patent: 0 622 653 (1994-11-01), None
PCT International Search Report, dated Jul. 5, 2004, for PCT Int'l. Appln. No. PCT/US2004/001550.

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