Invention Grant
- Patent Title: Contra-aspheric toric ophthalmic lens
- Patent Title (中): 反面非球面复曲面眼镜
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Application No.: US13312529Application Date: 2011-12-06
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Publication No.: US08668333B2Publication Date: 2014-03-11
- Inventor: Valdemar Portney
- Applicant: Valdemar Portney
- Agency: Hacker Daghighian & Martino
- Main IPC: G02C7/04
- IPC: G02C7/04 ; A61F2/16

Abstract:
An ophthalmic toric lens to be worn on an eye or implanted inside of an eye, the lens includes an anterior surface, a posterior surface, and a toric shape formed into one of the anterior and posterior surfaces, the toric shape comprising two non-spherical principle meridians each having a region within an annular area of optical zone and the region of one principle meridian being configured for producing a longitudinal ray aberration of a different sign than a longitudinal ray aberration sign from the region of another principle meridian.
Public/Granted literature
- US20120147321A1 Contra-Aspheric Toric Ophthalmic Lens Public/Granted day:2012-06-14
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