Invention Grant
- Patent Title: Lenses, devices and methods for ocular refractive error
- Patent Title (中): 用于眼屈光不正的镜片,装置和方法
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Application No.: US13857613Application Date: 2013-04-05
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Publication No.: US09195074B2Publication Date: 2015-11-24
- Inventor: Ravi Chandra Bakaraju , Klaus Ehrmann , Arthur Ho
- Applicant: Brien Holden Vision Institute
- Applicant Address: AU Sydney, New South Wales
- Assignee: Brien Holden Vision Institute
- Current Assignee: Brien Holden Vision Institute
- Current Assignee Address: AU Sydney, New South Wales
- Agency: Jones Day
- Priority: AU2012/901382 20120405; AU2012/904541 20121017
- Main IPC: G02C7/04
- IPC: G02C7/04 ; G02C7/06 ; G02C7/08 ; G02C7/02 ; A61F2/16 ; A61F2/14

Abstract:
Certain embodiments are directed to lenses, devices and/or methods. For example, a lens for an eye having an optical axis and an aberration profile along its optical axis, the aberration profile having a focal distance and including higher order aberrations having at least one of a primary spherical aberration component C(4,0) and a secondary spherical aberration component C(6,0). The aberration profile may provide, for a model eye with no aberrations and an on-axis length equal to the focal distance: (i) a peak, first retinal image quality (RIQ) within a through focus range that remains at or above a second RIQ over the through focus range that includes said focal distance, where the first RIQ is at least 0.35, the second RIQ is at least 0.1 and the through focus range is at least 1.8 Diopters; (ii) a RIQ of 0.3 with a through focus slope that improves in a direction of eye growth; and (iii) a RIQ of 0.3 with a through focus slope that degrades in a direction of eye growth. The RIQ may be Visual Strehl Ratio or similar measured along the optical axis for at least one pupil diameter in the range 3 mm to 6 mm, over a spatial frequency range of 0 to 30 cycles/degree inclusive and at a wavelength selected from within the range 540 nm to 590 nm inclusive.
Public/Granted literature
- US20130278888A1 Lenses, Devices and Methods for Ocular Refractive Error Public/Granted day:2013-10-24
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