Methods and apparatuses for altering relative curvature of field and positions of peripheral, off-axis focal positions
AssigneeVision CRC Limited
InventorsEarl Leo Smitth, Arthur Ho, Brien Anthony Holden
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Abstract
A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.
Claims59
A method for controlling optical aberrations to alter relative curvature of field comprising the steps of:
- providing an ocular system comprising a predetermined aberration-controlled design;
- controlling the forward-backward positions of the peripheral off-axis focal points relative to the central on-axis focal point;
- said control of positions of peripheral focal points producing at least one substantially corrective stimulus;
- providing the substantially corrective stimulus to an eye to alter eye growth wherein the control of positions of peripheral focal points is effected while simultaneously controlling the forward-backward position of the central on-axis focal point near to the retina;
- and
- substantially simultaneously providing clear visual images;
- wherein said ocular system maintains substantial axial alignment with said eye.
An ocular system comprising:
- a predetermined corrective factor to control the forward-backward positions of the peripheral off-axis focal points relative to the central on-axis focal point to produce at least one substantially corrective stimulus to an eye to alter eye growth;
- wherein the control of positions of peripheral focal points is effected while simultaneously controlling the forward-backward position of the central on-axis focal point near to the retina, and substantially simultaneously providing clear visual images;
- said ocular system maintaining substantial axial alignment with said eye.
An ocular device comprising predetermined aberrations to deliver at least one predetermined stimulus to an eye and predictably controlling the forward-backward positions of the peripheral off-axis focal points relative to the central on-axis focal point;
- wherein said device further comprises a predetermined prescriptive strength;
- said prescriptive strength predictably controlling the forward-backward position of the central on-axis focal point on to the retina;
- and substantially providing clear visual images;
- said device maintaining substantial axial alignment with said eye.
The device according to claim 55, wherein the predetermined aberrations are controlled through the use of optical design features selected from the group consisting of conic sections, polynomials, splines, Bezier curves and surfaces, Fourier series syntheses, Zernike polynomials, sagittal height descriptions and look-up tables, gradient refractive index profiling, Fresnel optical components, diffractive optical components, holographic optical components and combinations thereof.
Dependencies are inferred from the claim text.