Diffractive multifocal intraocular lens with modified...

A - Human Necessities – 61 – F

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61F 2/16 (2006.01)

Patent

CA 2741193

The present invention generally provides multifocal ophthalmic lenses, e.g., multifocal intraocular lenses, that employ a central refractive region for providing a refractive focusing power and a diffractive region for providing diffractive focusing powers. The refractive focusing power provided by the lens's central region corresponds to a far-focusing power that is substantially equal to one of the diffractive focusing powers while the other diffractive power corresponds to a near-focusing power. The far-focusing power can be enhanced by changes to the phase of the central refractive region and/or changes to the curvature of the central refractive region.

La présente invention porte d'une manière générale sur des lentilles ophtalmiques multifocales, par exemple, des lentilles intraoculaires multifocales, qui emploient une région réfractive centrale pour apporter une puissance de mise au point réfractive et une région diffractive pour apporter des puissances de focalisation diffractives. La puissance de focalisation réfractive apportée par la région centrale de la lentille correspond à une puissance de mise au point lointaine qui est sensiblement égale à l'une des puissances de mise au point diffractives tandis que l'autre puissance diffractive correspond à une puissance de mise au point proche. On peut améliorer la puissance de mise au point lointaine par des modifications apportées à la phase de la région réfractive centrale et/ou par des modifications de la courbure de la région réfractive centrale.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Diffractive multifocal intraocular lens with modified... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diffractive multifocal intraocular lens with modified..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffractive multifocal intraocular lens with modified... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1508389

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.