Contact lens having a uniform horizontal thickness profile

G - Physics – 02 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G02C 7/04 (2006.01)

Patent

CA 2404554

A contact lens (20) having a rotational stabilization mechanism thereon, and a thickness profile that reduces the torque imparted on the lens by the action of the eyelids. The prism ballast is provided on one or more portions of the anterior face of the lens such that the lens body has a uniform thickness of within 10% along horizontal cross-section. The anterior face of the lens may be segregated into a peripheral zone (24), an inner zone (26) circumscribed by the peripheral zone (24), and a central optic zone (22). The prism ballast portion is provided within the inner zone (26), which may be further subdivided into a superior portion (40), an intermediate portion (44) proximate the optic zone (22), and an inferior portion (48). The ballast portion increases in thickness along a superior-inferior line parallel to a vertical meridian, and has a substantially uniform thickness perpendicular thereto.

La présente invention concerne une lentille de contact (20) à stabilisateur de rotation, et dont le profil d'épaisseur réduit le couple que le mouvement des paupières produit sur la lentille. Le prisme-ballast se trouve en une ou plusieurs parties sur la face de la lentille de façon que le corps de la lentille présente en coupe horizontale une épaisseur uniforme dans la limite des 10%. La face antérieure de la lentille peut se décomposer en zone périphérique (24), zone intérieure (26) circonscrite par la zone périphérique (24), et zone optique centrale (22). La partie prisme-ballast ne sort pas de la zone intérieure (26), qui peut se diviser en partie supérieure (40), partie intermédiaire (44) jouxtant la zone optique (22), et partie inférieure (48). L'épaisseur de la partie ballast augmente le long d'un axe supérieur-inférieur parallèle à un méridien vertical, l'épaisseur restant sensiblement uniforme perpendiculairement à cet axe.

LandOfFree

Say what you really think

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

Rating

Contact lens having a uniform horizontal thickness profile does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Contact lens having a uniform horizontal thickness profile, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contact lens having a uniform horizontal thickness profile will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2016794

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